diff --git a/internal/user/entity.go b/internal/user/entity.go
index fdb5cc6..f309c6f 100644
--- a/internal/user/entity.go
+++ b/internal/user/entity.go
@@ -1,7 +1,7 @@
 package user
 
 import (
-	"github.com/google/uuid"
+	"tm/pkg/mongo"
 )
 
 // UserRole represents user roles in the system
@@ -25,22 +25,50 @@ const (
 
 // User represents a system user (admin/manager/operator)
 type User struct {
-	ID           uuid.UUID  `bson:"_id"`
-	FullName     string     `bson:"full_name"`
-	Username     string     `bson:"username"`
-	Email        string     `bson:"email"`
-	Password     string     `bson:"password"` // Never serialize password
-	Role         UserRole   `bson:"role"`
-	Status       UserStatus `bson:"status"`
-	CompanyID    *uuid.UUID `bson:"company_id,omitempty"`
-	Department   *string    `bson:"department,omitempty"`
-	Position     *string    `bson:"position,omitempty"`
-	Phone        *string    `bson:"phone,omitempty"`
-	ProfileImage *string    `bson:"profile_image,omitempty"`
-	IsVerified   bool       `bson:"is_verified"`
-	LastLoginAt  *int64     `bson:"last_login_at,omitempty"` // Unix timestamp
-	CreatedAt    int64      `bson:"created_at"`              // Unix timestamp
-	UpdatedAt    int64      `bson:"updated_at"`              // Unix timestamp
-	CreatedBy    *uuid.UUID `bson:"created_by,omitempty"`
-	UpdatedBy    *uuid.UUID `bson:"updated_by,omitempty"`
+	mongo.Model
+	FullName     string     `bson:"full_name" json:"full_name"`
+	Username     string     `bson:"username" json:"username"`
+	Email        string     `bson:"email" json:"email"`
+	Password     string     `bson:"password" json:"-"` // Never serialize password
+	Role         UserRole   `bson:"role" json:"role"`
+	Status       UserStatus `bson:"status" json:"status"`
+	CompanyID    *string    `bson:"company_id,omitempty" json:"company_id,omitempty"`
+	Department   *string    `bson:"department,omitempty" json:"department,omitempty"`
+	Position     *string    `bson:"position,omitempty" json:"position,omitempty"`
+	Phone        *string    `bson:"phone,omitempty" json:"phone,omitempty"`
+	ProfileImage *string    `bson:"profile_image,omitempty" json:"profile_image,omitempty"`
+	IsVerified   bool       `bson:"is_verified" json:"is_verified"`
+	LastLoginAt  *int64     `bson:"last_login_at,omitempty" json:"last_login_at,omitempty"` // Unix timestamp
+	CreatedBy    *string    `bson:"created_by,omitempty" json:"created_by,omitempty"`
+	UpdatedBy    *string    `bson:"updated_by,omitempty" json:"updated_by,omitempty"`
+}
+
+// SetID sets the user ID (implements IDSetter interface)
+func (u *User) SetID(id string) {
+	u.ID = id
+}
+
+// GetID returns the user ID (implements IDGetter interface)
+func (u *User) GetID() string {
+	return u.ID
+}
+
+// SetCreatedAt sets the created timestamp (implements Timestampable interface)
+func (u *User) SetCreatedAt(timestamp int64) {
+	u.CreatedAt = timestamp
+}
+
+// SetUpdatedAt sets the updated timestamp (implements Timestampable interface)
+func (u *User) SetUpdatedAt(timestamp int64) {
+	u.UpdatedAt = timestamp
+}
+
+// GetCreatedAt returns the created timestamp (implements Timestampable interface)
+func (u *User) GetCreatedAt() int64 {
+	return u.CreatedAt
+}
+
+// GetUpdatedAt returns the updated timestamp (implements Timestampable interface)
+func (u *User) GetUpdatedAt() int64 {
+	return u.UpdatedAt
 }
diff --git a/internal/user/form.go b/internal/user/form.go
index 49ef33c..c337f13 100644
--- a/internal/user/form.go
+++ b/internal/user/form.go
@@ -112,29 +112,14 @@ type UserListResponse struct {
 
 // Helper function to convert User to UserResponse
 func (u *User) ToResponse() *UserResponse {
-	companyID := ""
-	if u.CompanyID != nil {
-		companyID = u.CompanyID.String()
-	}
-
-	createdBy := ""
-	if u.CreatedBy != nil {
-		createdBy = u.CreatedBy.String()
-	}
-
-	updatedBy := ""
-	if u.UpdatedBy != nil {
-		updatedBy = u.UpdatedBy.String()
-	}
-
 	return &UserResponse{
-		ID:           u.ID.String(),
+		ID:           u.ID,
 		FullName:     u.FullName,
 		Username:     u.Username,
 		Email:        u.Email,
 		Role:         string(u.Role),
 		Status:       string(u.Status),
-		CompanyID:    &companyID,
+		CompanyID:    u.CompanyID,
 		Department:   u.Department,
 		Position:     u.Position,
 		Phone:        u.Phone,
@@ -143,7 +128,7 @@ func (u *User) ToResponse() *UserResponse {
 		LastLoginAt:  u.LastLoginAt,
 		CreatedAt:    u.CreatedAt,
 		UpdatedAt:    u.UpdatedAt,
-		CreatedBy:    &createdBy,
-		UpdatedBy:    &updatedBy,
+		CreatedBy:    u.CreatedBy,
+		UpdatedBy:    u.UpdatedBy,
 	}
 }
diff --git a/internal/user/handler.go b/internal/user/handler.go
index 30aea71..270c0f4 100644
--- a/internal/user/handler.go
+++ b/internal/user/handler.go
@@ -7,7 +7,6 @@ import (
 	"tm/pkg/response"
 
 	"github.com/asaskevich/govalidator"
-	"github.com/google/uuid"
 	"github.com/labstack/echo/v4"
 )
 
@@ -366,12 +365,8 @@ func (h *Handler) ListUsers(c echo.Context) error {
 // @Router  /admin/v1/users/{id} [get]
 func (h *Handler) GetUserByID(c echo.Context) error {
 	idStr := c.Param("id")
-	userID, err := uuid.Parse(idStr)
-	if err != nil {
-		return response.BadRequest(c, "Invalid user ID", "")
-	}
 
-	user, err := h.service.GetUserByID(c.Request().Context(), userID)
+	user, err := h.service.GetUserByID(c.Request().Context(), idStr)
 	if err != nil {
 		return response.NotFound(c, "User not found")
 	}
@@ -403,10 +398,6 @@ func (h *Handler) UpdateUser(c echo.Context) error {
 	}
 
 	idStr := c.Param("id")
-	userID, err := uuid.Parse(idStr)
-	if err != nil {
-		return response.BadRequest(c, "Invalid user ID", "")
-	}
 
 	var form UpdateUserForm
 	if err := c.Bind(&form); err != nil {
@@ -419,7 +410,7 @@ func (h *Handler) UpdateUser(c echo.Context) error {
 	}
 
 	// Call service
-	user, err := h.service.UpdateUser(c.Request().Context(), userID, &form, &currentUserID)
+	user, err := h.service.UpdateUser(c.Request().Context(), idStr, &form, &currentUserID)
 	if err != nil {
 		return response.BadRequest(c, err.Error(), "")
 	}
@@ -450,12 +441,8 @@ func (h *Handler) DeleteUser(c echo.Context) error {
 	}
 
 	idStr := c.Param("id")
-	userID, err := uuid.Parse(idStr)
-	if err != nil {
-		return response.BadRequest(c, "Invalid user ID", "")
-	}
 
-	err = h.service.DeleteUser(c.Request().Context(), userID, &currentUserID)
+	err = h.service.DeleteUser(c.Request().Context(), idStr, &currentUserID)
 	if err != nil {
 		return response.BadRequest(c, err.Error(), "")
 	}
@@ -488,10 +475,6 @@ func (h *Handler) UpdateUserStatus(c echo.Context) error {
 	}
 
 	idStr := c.Param("id")
-	userID, err := uuid.Parse(idStr)
-	if err != nil {
-		return response.BadRequest(c, "Invalid user ID", "")
-	}
 
 	var form UpdateUserStatusForm
 	if err := c.Bind(&form); err != nil {
@@ -504,7 +487,7 @@ func (h *Handler) UpdateUserStatus(c echo.Context) error {
 	}
 
 	// Call service
-	err = h.service.UpdateUserStatus(c.Request().Context(), userID, &form, &currentUserID)
+	err = h.service.UpdateUserStatus(c.Request().Context(), idStr, &form, &currentUserID)
 	if err != nil {
 		return response.BadRequest(c, err.Error(), "")
 	}
@@ -538,10 +521,6 @@ func (h *Handler) UpdateUserRole(c echo.Context) error {
 	}
 
 	idStr := c.Param("id")
-	userID, err := uuid.Parse(idStr)
-	if err != nil {
-		return response.BadRequest(c, "Invalid user ID", "")
-	}
 
 	var form UpdateUserRoleForm
 	if err := c.Bind(&form); err != nil {
@@ -554,7 +533,7 @@ func (h *Handler) UpdateUserRole(c echo.Context) error {
 	}
 
 	// Call service
-	err = h.service.UpdateUserRole(c.Request().Context(), userID, &form, &currentUserID)
+	err = h.service.UpdateUserRole(c.Request().Context(), idStr, &form, &currentUserID)
 	if err != nil {
 		return response.BadRequest(c, err.Error(), "")
 	}
@@ -582,10 +561,6 @@ func (h *Handler) UpdateUserRole(c echo.Context) error {
 // @Router  /admin/v1/users/company/{company_id} [get]
 func (h *Handler) GetUsersByCompanyID(c echo.Context) error {
 	companyIDStr := c.Param("company_id")
-	companyID, err := uuid.Parse(companyIDStr)
-	if err != nil {
-		return response.BadRequest(c, "Invalid company ID", "")
-	}
 
 	// Get query parameters
 	limitStr := c.QueryParam("limit")
@@ -608,7 +583,7 @@ func (h *Handler) GetUsersByCompanyID(c echo.Context) error {
 	}
 
 	// Call service
-	users, total, err := h.service.GetUsersByCompanyID(c.Request().Context(), companyID, limit, offset)
+	users, total, err := h.service.GetUsersByCompanyID(c.Request().Context(), companyIDStr, limit, offset)
 	if err != nil {
 		return response.InternalServerError(c, "Failed to get users by company")
 	}
diff --git a/internal/user/middleware.go b/internal/user/middleware.go
index 4950a99..7fb8b19 100644
--- a/internal/user/middleware.go
+++ b/internal/user/middleware.go
@@ -53,7 +53,7 @@ func (h *Handler) AuthMiddleware() echo.MiddlewareFunc {
 			}
 
 			// Store user information in context for handlers to use
-			c.Set("user_id", userID)
+			c.Set("user_id", userID.String())
 			c.Set("user_email", validationResult.Claims.Email)
 			c.Set("user_role", validationResult.Claims.Role)
 			c.Set("company_id", validationResult.Claims.CompanyID)
@@ -147,10 +147,10 @@ func (h *Handler) CompanyAccessMiddleware() echo.MiddlewareFunc {
 }
 
 // GetUserIDFromContext extracts user ID from Echo context
-func GetUserIDFromContext(c echo.Context) (uuid.UUID, error) {
-	userID, ok := c.Get("user_id").(uuid.UUID)
+func GetUserIDFromContext(c echo.Context) (string, error) {
+	userID, ok := c.Get("user_id").(string)
 	if !ok {
-		return uuid.Nil, echo.NewHTTPError(http.StatusUnauthorized, "User ID not found in context")
+		return "", echo.NewHTTPError(http.StatusUnauthorized, "User ID not found in context")
 	}
 	return userID, nil
 }
diff --git a/internal/user/repository.go b/internal/user/repository.go
index 07f5fe2..f53d62f 100644
--- a/internal/user/repository.go
+++ b/internal/user/repository.go
@@ -7,104 +7,58 @@ import (
 	"tm/pkg/logger"
 	mongopkg "tm/pkg/mongo"
 
-	"github.com/google/uuid"
 	"go.mongodb.org/mongo-driver/bson"
-	"go.mongodb.org/mongo-driver/mongo"
-	"go.mongodb.org/mongo-driver/mongo/options"
 )
 
 // Repository defines methods for user data access
 type Repository interface {
 	Create(ctx context.Context, user *User) error
-	GetByID(ctx context.Context, id uuid.UUID) (*User, error)
+	GetByID(ctx context.Context, id string) (*User, error)
 	GetByEmail(ctx context.Context, email string) (*User, error)
 	GetByUsername(ctx context.Context, username string) (*User, error)
 	Update(ctx context.Context, user *User) error
-	Delete(ctx context.Context, id uuid.UUID) error
+	Delete(ctx context.Context, id string) error
 	List(ctx context.Context, limit, offset int) ([]*User, error)
-	Search(ctx context.Context, search string, status *string, role *string, companyID *uuid.UUID, limit, offset int, sortBy, sortOrder string) ([]*User, error)
-	GetByCompanyID(ctx context.Context, companyID uuid.UUID, limit, offset int) ([]*User, error)
+	Search(ctx context.Context, search string, status *string, role *string, companyID *string, limit, offset int, sortBy, sortOrder string) ([]*User, error)
+	GetByCompanyID(ctx context.Context, companyID string, limit, offset int) ([]*User, error)
 	GetByRole(ctx context.Context, role UserRole, limit, offset int) ([]*User, error)
-	UpdateLastLogin(ctx context.Context, id uuid.UUID) error
-	CountByCompanyID(ctx context.Context, companyID uuid.UUID) (int64, error)
+	UpdateLastLogin(ctx context.Context, id string) error
+	CountByCompanyID(ctx context.Context, companyID string) (int64, error)
 }
 
-// userRepository implements the Repository interface
+// userRepository implements the Repository interface using the MongoDB ORM
 type userRepository struct {
-	collection *mongo.Collection
-	logger     logger.Logger
+	ormRepo mongopkg.Repository[User]
+	logger  logger.Logger
 }
 
 // NewUserRepository creates a new user repository
 func NewUserRepository(mongoManager *mongopkg.ConnectionManager, logger logger.Logger) Repository {
-	collection := mongoManager.GetCollection("users")
+	// Create indexes using the ORM's index management
+	indexes := []mongopkg.Index{
+		*mongopkg.CreateUniqueIndex("email_idx", bson.D{{Key: "email", Value: 1}}),
+		*mongopkg.CreateUniqueIndex("username_idx", bson.D{{Key: "username", Value: 1}}),
+		*mongopkg.NewIndex("company_id_idx", bson.D{{Key: "company_id", Value: 1}}),
+		*mongopkg.NewIndex("role_idx", bson.D{{Key: "role", Value: 1}}),
+		*mongopkg.NewIndex("status_idx", bson.D{{Key: "status", Value: 1}}),
+		*mongopkg.NewIndex("created_at_idx", bson.D{{Key: "created_at", Value: -1}}),
+		*mongopkg.CreateTextIndex("search_idx", "full_name", "email", "username", "department", "position"),
+	}
 
 	// Create indexes
-	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
-	defer cancel()
-
-	// Email index (unique)
-	emailIndex := mongo.IndexModel{
-		Keys:    bson.D{{Key: "email", Value: 1}},
-		Options: options.Index().SetUnique(true),
-	}
-
-	// Username index (unique)
-	usernameIndex := mongo.IndexModel{
-		Keys:    bson.D{{Key: "username", Value: 1}},
-		Options: options.Index().SetUnique(true),
-	}
-
-	// Company ID index
-	companyIndex := mongo.IndexModel{
-		Keys: bson.D{{Key: "company_id", Value: 1}},
-	}
-
-	// Role index
-	roleIndex := mongo.IndexModel{
-		Keys: bson.D{{Key: "role", Value: 1}},
-	}
-
-	// Status index
-	statusIndex := mongo.IndexModel{
-		Keys: bson.D{{Key: "status", Value: 1}},
-	}
-
-	// Created at index
-	createdAtIndex := mongo.IndexModel{
-		Keys: bson.D{{Key: "created_at", Value: -1}},
-	}
-
-	// Full text search index
-	textIndex := mongo.IndexModel{
-		Keys: bson.D{
-			{Key: "full_name", Value: "text"},
-			{Key: "email", Value: "text"},
-			{Key: "username", Value: "text"},
-			{Key: "department", Value: "text"},
-			{Key: "position", Value: "text"},
-		},
-	}
-
-	_, err := collection.Indexes().CreateMany(ctx, []mongo.IndexModel{
-		emailIndex,
-		usernameIndex,
-		companyIndex,
-		roleIndex,
-		statusIndex,
-		createdAtIndex,
-		textIndex,
-	})
-
+	err := mongoManager.CreateIndexes("users", indexes)
 	if err != nil {
 		logger.Warn("Failed to create user indexes", map[string]interface{}{
 			"error": err.Error(),
 		})
 	}
 
+	// Create ORM repository
+	ormRepo := mongopkg.NewRepository[User](mongoManager.GetCollection("users"), logger)
+
 	return &userRepository{
-		collection: collection,
-		logger:     logger,
+		ormRepo: ormRepo,
+		logger:  logger,
 	}
 }
 
@@ -112,25 +66,22 @@ func NewUserRepository(mongoManager *mongopkg.ConnectionManager, logger logger.L
 func (r *userRepository) Create(ctx context.Context, user *User) error {
 	// Set created/updated timestamps using Unix timestamps
 	now := time.Now().Unix()
-	user.CreatedAt = now
-	user.UpdatedAt = now
+	user.SetCreatedAt(now)
+	user.SetUpdatedAt(now)
 
-	// Insert user
-	_, err := r.collection.InsertOne(ctx, user)
+	// Use ORM to create user
+	err := r.ormRepo.Create(ctx, user)
 	if err != nil {
-		if mongo.IsDuplicateKeyError(err) {
-			return errors.New("user already exists")
-		}
 		r.logger.Error("Failed to create user", map[string]interface{}{
 			"error":   err.Error(),
 			"email":   user.Email,
-			"user_id": user.ID.String(),
+			"user_id": user.ID,
 		})
 		return err
 	}
 
 	r.logger.Info("User created successfully", map[string]interface{}{
-		"user_id": user.ID.String(),
+		"user_id": user.ID,
 		"email":   user.Email,
 		"role":    user.Role,
 	})
@@ -139,35 +90,28 @@ func (r *userRepository) Create(ctx context.Context, user *User) error {
 }
 
 // GetByID retrieves a user by ID
-func (r *userRepository) GetByID(ctx context.Context, id uuid.UUID) (*User, error) {
-	var user User
-
-	filter := bson.M{"_id": id}
-	err := r.collection.FindOne(ctx, filter).Decode(&user)
-
+func (r *userRepository) GetByID(ctx context.Context, id string) (*User, error) {
+	user, err := r.ormRepo.FindByID(ctx, id)
 	if err != nil {
-		if err == mongo.ErrNoDocuments {
+		if errors.Is(err, mongopkg.ErrDocumentNotFound) {
 			return nil, errors.New("user not found")
 		}
 		r.logger.Error("Failed to get user by ID", map[string]interface{}{
 			"error":   err.Error(),
-			"user_id": id.String(),
+			"user_id": id,
 		})
 		return nil, err
 	}
 
-	return &user, nil
+	return user, nil
 }
 
 // GetByEmail retrieves a user by email
 func (r *userRepository) GetByEmail(ctx context.Context, email string) (*User, error) {
-	var user User
-
 	filter := bson.M{"email": email}
-	err := r.collection.FindOne(ctx, filter).Decode(&user)
-
+	user, err := r.ormRepo.FindOne(ctx, filter)
 	if err != nil {
-		if err == mongo.ErrNoDocuments {
+		if errors.Is(err, mongopkg.ErrDocumentNotFound) {
 			return nil, errors.New("user not found")
 		}
 		r.logger.Error("Failed to get user by email", map[string]interface{}{
@@ -177,18 +121,15 @@ func (r *userRepository) GetByEmail(ctx context.Context, email string) (*User, e
 		return nil, err
 	}
 
-	return &user, nil
+	return user, nil
 }
 
 // GetByUsername retrieves a user by username
 func (r *userRepository) GetByUsername(ctx context.Context, username string) (*User, error) {
-	var user User
-
 	filter := bson.M{"username": username}
-	err := r.collection.FindOne(ctx, filter).Decode(&user)
-
+	user, err := r.ormRepo.FindOne(ctx, filter)
 	if err != nil {
-		if err == mongo.ErrNoDocuments {
+		if errors.Is(err, mongopkg.ErrDocumentNotFound) {
 			return nil, errors.New("user not found")
 		}
 		r.logger.Error("Failed to get user by username", map[string]interface{}{
@@ -198,32 +139,26 @@ func (r *userRepository) GetByUsername(ctx context.Context, username string) (*U
 		return nil, err
 	}
 
-	return &user, nil
+	return user, nil
 }
 
 // Update updates a user
 func (r *userRepository) Update(ctx context.Context, user *User) error {
 	// Set updated timestamp using Unix timestamp
-	user.UpdatedAt = time.Now().Unix()
+	user.SetUpdatedAt(time.Now().Unix())
 
-	filter := bson.M{"_id": user.ID}
-	update := bson.M{"$set": user}
-
-	result, err := r.collection.UpdateOne(ctx, filter, update)
+	// Use ORM to update user
+	err := r.ormRepo.Update(ctx, user)
 	if err != nil {
 		r.logger.Error("Failed to update user", map[string]interface{}{
 			"error":   err.Error(),
-			"user_id": user.ID.String(),
+			"user_id": user.ID,
 		})
 		return err
 	}
 
-	if result.MatchedCount == 0 {
-		return errors.New("user not found")
-	}
-
 	r.logger.Info("User updated successfully", map[string]interface{}{
-		"user_id": user.ID.String(),
+		"user_id": user.ID,
 		"email":   user.Email,
 	})
 
@@ -231,30 +166,29 @@ func (r *userRepository) Update(ctx context.Context, user *User) error {
 }
 
 // Delete deletes a user (soft delete by setting status to inactive)
-func (r *userRepository) Delete(ctx context.Context, id uuid.UUID) error {
-	filter := bson.M{"_id": id}
-	update := bson.M{
-		"$set": bson.M{
-			"status":     UserStatusInactive,
-			"updated_at": time.Now().Unix(),
-		},
+func (r *userRepository) Delete(ctx context.Context, id string) error {
+	// Get user first
+	user, err := r.GetByID(ctx, id)
+	if err != nil {
+		return err
 	}
 
-	result, err := r.collection.UpdateOne(ctx, filter, update)
+	// Update status to inactive
+	user.Status = UserStatusInactive
+	user.SetUpdatedAt(time.Now().Unix())
+
+	// Update in database
+	err = r.ormRepo.Update(ctx, user)
 	if err != nil {
 		r.logger.Error("Failed to delete user", map[string]interface{}{
 			"error":   err.Error(),
-			"user_id": id.String(),
+			"user_id": id,
 		})
 		return err
 	}
 
-	if result.MatchedCount == 0 {
-		return errors.New("user not found")
-	}
-
 	r.logger.Info("User deleted successfully", map[string]interface{}{
-		"user_id": id.String(),
+		"user_id": id,
 	})
 
 	return nil
@@ -262,18 +196,18 @@ func (r *userRepository) Delete(ctx context.Context, id uuid.UUID) error {
 
 // List retrieves users with pagination
 func (r *userRepository) List(ctx context.Context, limit, offset int) ([]*User, error) {
-	var users []*User
-
-	// Build options
-	opts := options.Find()
-	opts.SetLimit(int64(limit))
-	opts.SetSkip(int64(offset))
-	opts.SetSort(bson.D{{Key: "created_at", Value: -1}}) // Sort by created_at desc
+	// Build pagination
+	pagination := mongopkg.NewPaginationBuilder().
+		Limit(limit).
+		Skip(offset).
+		SortDesc("created_at").
+		Build()
 
 	// Only active users by default
 	filter := bson.M{"status": bson.M{"$ne": UserStatusInactive}}
 
-	cursor, err := r.collection.Find(ctx, filter, opts)
+	// Use ORM to find users
+	result, err := r.ormRepo.FindAll(ctx, filter, pagination)
 	if err != nil {
 		r.logger.Error("Failed to list users", map[string]interface{}{
 			"error":  err.Error(),
@@ -282,22 +216,18 @@ func (r *userRepository) List(ctx context.Context, limit, offset int) ([]*User,
 		})
 		return nil, err
 	}
-	defer cursor.Close(ctx)
 
-	if err = cursor.All(ctx, &users); err != nil {
-		r.logger.Error("Failed to decode users", map[string]interface{}{
-			"error": err.Error(),
-		})
-		return nil, err
+	// Convert []User to []*User
+	users := make([]*User, len(result.Items))
+	for i := range result.Items {
+		users[i] = &result.Items[i]
 	}
 
 	return users, nil
 }
 
 // Search retrieves users with search and filters
-func (r *userRepository) Search(ctx context.Context, search string, status *string, role *string, companyID *uuid.UUID, limit, offset int, sortBy, sortOrder string) ([]*User, error) {
-	var users []*User
-
+func (r *userRepository) Search(ctx context.Context, search string, status *string, role *string, companyID *string, limit, offset int, sortBy, sortOrder string) ([]*User, error) {
 	// Build filter
 	filter := bson.M{}
 
@@ -317,23 +247,24 @@ func (r *userRepository) Search(ctx context.Context, search string, status *stri
 		filter["company_id"] = *companyID
 	}
 
-	// Build options
-	opts := options.Find()
-	opts.SetLimit(int64(limit))
-	opts.SetSkip(int64(offset))
+	// Build pagination
+	pagination := mongopkg.NewPaginationBuilder().
+		Limit(limit).
+		Skip(offset)
 
 	// Set sort
 	if sortBy != "" {
-		sortValue := 1
 		if sortOrder == "desc" {
-			sortValue = -1
+			pagination.SortDesc(sortBy)
+		} else {
+			pagination.SortAsc(sortBy)
 		}
-		opts.SetSort(bson.D{{Key: sortBy, Value: sortValue}})
 	} else {
-		opts.SetSort(bson.D{{Key: "created_at", Value: -1}}) // Default sort
+		pagination.SortDesc("created_at") // Default sort
 	}
 
-	cursor, err := r.collection.Find(ctx, filter, opts)
+	// Use ORM to find users
+	result, err := r.ormRepo.FindAll(ctx, filter, pagination.Build())
 	if err != nil {
 		r.logger.Error("Failed to search users", map[string]interface{}{
 			"error":  err.Error(),
@@ -341,27 +272,24 @@ func (r *userRepository) Search(ctx context.Context, search string, status *stri
 		})
 		return nil, err
 	}
-	defer cursor.Close(ctx)
 
-	if err = cursor.All(ctx, &users); err != nil {
-		r.logger.Error("Failed to decode users from search", map[string]interface{}{
-			"error": err.Error(),
-		})
-		return nil, err
+	// Convert []User to []*User
+	users := make([]*User, len(result.Items))
+	for i := range result.Items {
+		users[i] = &result.Items[i]
 	}
 
 	return users, nil
 }
 
 // GetByCompanyID retrieves users by company ID with pagination
-func (r *userRepository) GetByCompanyID(ctx context.Context, companyID uuid.UUID, limit, offset int) ([]*User, error) {
-	var users []*User
-
-	// Build options
-	opts := options.Find()
-	opts.SetLimit(int64(limit))
-	opts.SetSkip(int64(offset))
-	opts.SetSort(bson.D{{Key: "created_at", Value: -1}}) // Sort by created_at desc
+func (r *userRepository) GetByCompanyID(ctx context.Context, companyID string, limit, offset int) ([]*User, error) {
+	// Build pagination
+	pagination := mongopkg.NewPaginationBuilder().
+		Limit(limit).
+		Skip(offset).
+		SortDesc("created_at").
+		Build()
 
 	// Filter by company ID and active status
 	filter := bson.M{
@@ -369,24 +297,22 @@ func (r *userRepository) GetByCompanyID(ctx context.Context, companyID uuid.UUID
 		"status":     bson.M{"$ne": UserStatusInactive},
 	}
 
-	cursor, err := r.collection.Find(ctx, filter, opts)
+	// Use ORM to find users
+	result, err := r.ormRepo.FindAll(ctx, filter, pagination)
 	if err != nil {
 		r.logger.Error("Failed to get users by company ID", map[string]interface{}{
 			"error":      err.Error(),
-			"company_id": companyID.String(),
+			"company_id": companyID,
 			"limit":      limit,
 			"offset":     offset,
 		})
 		return nil, err
 	}
-	defer cursor.Close(ctx)
 
-	if err = cursor.All(ctx, &users); err != nil {
-		r.logger.Error("Failed to decode users by company", map[string]interface{}{
-			"error":      err.Error(),
-			"company_id": companyID.String(),
-		})
-		return nil, err
+	// Convert []User to []*User
+	users := make([]*User, len(result.Items))
+	for i := range result.Items {
+		users[i] = &result.Items[i]
 	}
 
 	return users, nil
@@ -394,13 +320,12 @@ func (r *userRepository) GetByCompanyID(ctx context.Context, companyID uuid.UUID
 
 // GetByRole retrieves users by role with pagination
 func (r *userRepository) GetByRole(ctx context.Context, role UserRole, limit, offset int) ([]*User, error) {
-	var users []*User
-
-	// Build options
-	opts := options.Find()
-	opts.SetLimit(int64(limit))
-	opts.SetSkip(int64(offset))
-	opts.SetSort(bson.D{{Key: "created_at", Value: -1}}) // Sort by created_at desc
+	// Build pagination
+	pagination := mongopkg.NewPaginationBuilder().
+		Limit(limit).
+		Skip(offset).
+		SortDesc("created_at").
+		Build()
 
 	// Filter by role and active status
 	filter := bson.M{
@@ -408,7 +333,8 @@ func (r *userRepository) GetByRole(ctx context.Context, role UserRole, limit, of
 		"status": bson.M{"$ne": UserStatusInactive},
 	}
 
-	cursor, err := r.collection.Find(ctx, filter, opts)
+	// Use ORM to find users
+	result, err := r.ormRepo.FindAll(ctx, filter, pagination)
 	if err != nil {
 		r.logger.Error("Failed to get users by role", map[string]interface{}{
 			"error":  err.Error(),
@@ -418,61 +344,57 @@ func (r *userRepository) GetByRole(ctx context.Context, role UserRole, limit, of
 		})
 		return nil, err
 	}
-	defer cursor.Close(ctx)
 
-	if err = cursor.All(ctx, &users); err != nil {
-		r.logger.Error("Failed to decode users by role", map[string]interface{}{
-			"error": err.Error(),
-			"role":  role,
-		})
-		return nil, err
+	// Convert []User to []*User
+	users := make([]*User, len(result.Items))
+	for i := range result.Items {
+		users[i] = &result.Items[i]
 	}
 
 	return users, nil
 }
 
 // UpdateLastLogin updates the last login timestamp
-func (r *userRepository) UpdateLastLogin(ctx context.Context, id uuid.UUID) error {
-	filter := bson.M{"_id": id}
-	update := bson.M{
-		"$set": bson.M{
-			"last_login_at": time.Now().Unix(),
-			"updated_at":    time.Now().Unix(),
-		},
+func (r *userRepository) UpdateLastLogin(ctx context.Context, id string) error {
+	// Get user first
+	user, err := r.GetByID(ctx, id)
+	if err != nil {
+		return err
 	}
 
-	result, err := r.collection.UpdateOne(ctx, filter, update)
+	// Update last login timestamp
+	user.LastLoginAt = &[]int64{time.Now().Unix()}[0]
+	user.SetUpdatedAt(time.Now().Unix())
+
+	// Update in database
+	err = r.ormRepo.Update(ctx, user)
 	if err != nil {
 		r.logger.Error("Failed to update last login", map[string]interface{}{
 			"error":   err.Error(),
-			"user_id": id.String(),
+			"user_id": id,
 		})
 		return err
 	}
 
-	if result.MatchedCount == 0 {
-		return errors.New("user not found")
-	}
-
 	r.logger.Info("Last login updated successfully", map[string]interface{}{
-		"user_id": id.String(),
+		"user_id": id,
 	})
 
 	return nil
 }
 
 // CountByCompanyID counts users by company ID
-func (r *userRepository) CountByCompanyID(ctx context.Context, companyID uuid.UUID) (int64, error) {
+func (r *userRepository) CountByCompanyID(ctx context.Context, companyID string) (int64, error) {
 	filter := bson.M{
 		"company_id": companyID,
 		"status":     bson.M{"$ne": UserStatusInactive},
 	}
 
-	count, err := r.collection.CountDocuments(ctx, filter)
+	count, err := r.ormRepo.Count(ctx, filter)
 	if err != nil {
 		r.logger.Error("Failed to count users by company ID", map[string]interface{}{
 			"error":      err.Error(),
-			"company_id": companyID.String(),
+			"company_id": companyID,
 		})
 		return 0, err
 	}
diff --git a/internal/user/service.go b/internal/user/service.go
index 2130ee7..2320a01 100644
--- a/internal/user/service.go
+++ b/internal/user/service.go
@@ -14,22 +14,22 @@ import (
 
 // Service defines business logic for user operations
 type Service interface {
-	CreateUser(ctx context.Context, form *CreateUserForm, createdBy *uuid.UUID) (*User, error)
+	CreateUser(ctx context.Context, form *CreateUserForm, createdBy *string) (*User, error)
 	Login(ctx context.Context, form *LoginForm) (*AuthResponse, error)
 	RefreshToken(ctx context.Context, refreshToken string) (*AuthResponse, error)
-	GetProfile(ctx context.Context, userID uuid.UUID) (*User, error)
-	UpdateProfile(ctx context.Context, userID uuid.UUID, form *UpdateProfileForm) error
-	ChangePassword(ctx context.Context, userID uuid.UUID, form *ChangePasswordForm) error
+	GetProfile(ctx context.Context, userID string) (*User, error)
+	UpdateProfile(ctx context.Context, userID string, form *UpdateProfileForm) error
+	ChangePassword(ctx context.Context, userID string, form *ChangePasswordForm) error
 	ResetPassword(ctx context.Context, form *ResetPasswordForm) error
-	GetUserByID(ctx context.Context, id uuid.UUID) (*User, error)
-	UpdateUser(ctx context.Context, id uuid.UUID, form *UpdateUserForm, updatedBy *uuid.UUID) (*User, error)
-	DeleteUser(ctx context.Context, id uuid.UUID, deletedBy *uuid.UUID) error
+	GetUserByID(ctx context.Context, id string) (*User, error)
+	UpdateUser(ctx context.Context, id string, form *UpdateUserForm, updatedBy *string) (*User, error)
+	DeleteUser(ctx context.Context, id string, deletedBy *string) error
 	ListUsers(ctx context.Context, form *ListUsersForm) (*UserListResponse, error)
-	UpdateUserStatus(ctx context.Context, id uuid.UUID, form *UpdateUserStatusForm, updatedBy *uuid.UUID) error
-	UpdateUserRole(ctx context.Context, id uuid.UUID, form *UpdateUserRoleForm, updatedBy *uuid.UUID) error
-	GetUsersByCompanyID(ctx context.Context, companyID uuid.UUID, limit, offset int) ([]*User, int64, error)
+	UpdateUserStatus(ctx context.Context, id string, form *UpdateUserStatusForm, updatedBy *string) error
+	UpdateUserRole(ctx context.Context, id string, form *UpdateUserRoleForm, updatedBy *string) error
+	GetUsersByCompanyID(ctx context.Context, companyID string, limit, offset int) ([]*User, int64, error)
 	GetUsersByRole(ctx context.Context, role UserRole, limit, offset int) ([]*User, error)
-	Logout(ctx context.Context, userID uuid.UUID, accessToken string) error
+	Logout(ctx context.Context, userID string, accessToken string) error
 }
 
 // userService implements the Service interface
@@ -51,7 +51,7 @@ func NewUserService(repository Repository, logger logger.Logger, authService aut
 }
 
 // CreateUser creates a new user
-func (s *userService) CreateUser(ctx context.Context, form *CreateUserForm, createdBy *uuid.UUID) (*User, error) {
+func (s *userService) CreateUser(ctx context.Context, form *CreateUserForm, createdBy *string) (*User, error) {
 	// Check if email already exists
 	existingUser, _ := s.repository.GetByEmail(ctx, form.Email)
 	if existingUser != nil {
@@ -74,13 +74,9 @@ func (s *userService) CreateUser(ctx context.Context, form *CreateUserForm, crea
 	}
 
 	// Parse optional fields
-	var companyID *uuid.UUID
+	var companyID *string
 	if form.CompanyID != nil {
-		parsedID, err := uuid.Parse(*form.CompanyID)
-		if err != nil {
-			return nil, errors.New("invalid company ID")
-		}
-		companyID = &parsedID
+		companyID = form.CompanyID
 	}
 
 	// Validate role
@@ -91,7 +87,6 @@ func (s *userService) CreateUser(ctx context.Context, form *CreateUserForm, crea
 
 	// Create user
 	user := &User{
-		ID:           uuid.New(),
 		FullName:     form.FullName,
 		Username:     form.Username,
 		Email:        form.Email,
@@ -119,11 +114,11 @@ func (s *userService) CreateUser(ctx context.Context, form *CreateUserForm, crea
 	}
 
 	s.logger.Info("User created successfully", map[string]interface{}{
-		"user_id":    user.ID.String(),
+		"user_id":    user.ID,
 		"email":      user.Email,
 		"username":   user.Username,
 		"role":       user.Role,
-		"created_by": createdBy.String(),
+		"created_by": *createdBy,
 	})
 
 	return user, nil
@@ -158,7 +153,7 @@ func (s *userService) Login(ctx context.Context, form *LoginForm) (*AuthResponse
 	err = bcrypt.CompareHashAndPassword([]byte(user.Password), []byte(form.Password))
 	if err != nil {
 		s.logger.Warn("Login attempt with wrong password", map[string]interface{}{
-			"user_id": user.ID.String(),
+			"user_id": user.ID,
 			"email":   user.Email,
 		})
 		return nil, errors.New("invalid credentials")
@@ -169,18 +164,18 @@ func (s *userService) Login(ctx context.Context, form *LoginForm) (*AuthResponse
 	if err != nil {
 		s.logger.Error("Failed to update last login", map[string]interface{}{
 			"error":   err.Error(),
-			"user_id": user.ID.String(),
+			"user_id": user.ID,
 		})
 	}
 
 	// Generate JWT tokens using authorization service
 	companyID := ""
 	if user.CompanyID != nil {
-		companyID = user.CompanyID.String()
+		companyID = *user.CompanyID
 	}
 
 	tokenPair, err := s.authService.GenerateTokenPair(
-		user.ID.String(),
+		user.ID,
 		user.Email,
 		string(user.Role),
 		companyID,
@@ -188,13 +183,13 @@ func (s *userService) Login(ctx context.Context, form *LoginForm) (*AuthResponse
 	if err != nil {
 		s.logger.Error("Failed to generate JWT tokens", map[string]interface{}{
 			"error":   err.Error(),
-			"user_id": user.ID.String(),
+			"user_id": user.ID,
 		})
 		return nil, errors.New("failed to generate authentication tokens")
 	}
 
 	s.logger.Info("User logged in successfully", map[string]interface{}{
-		"user_id": user.ID.String(),
+		"user_id": user.ID,
 		"email":   user.Email,
 		"role":    user.Role,
 	})
@@ -243,7 +238,7 @@ func (s *userService) RefreshToken(ctx context.Context, refreshToken string) (*A
 		return nil, errors.New("invalid token format")
 	}
 
-	user, err := s.repository.GetByID(ctx, userID)
+	user, err := s.repository.GetByID(ctx, userID.String())
 	if err != nil {
 		s.logger.Error("Failed to get user for token refresh", map[string]interface{}{
 			"error":   err.Error(),
@@ -258,7 +253,7 @@ func (s *userService) RefreshToken(ctx context.Context, refreshToken string) (*A
 	}
 
 	s.logger.Info("Access token refreshed successfully", map[string]interface{}{
-		"user_id": user.ID.String(),
+		"user_id": user.ID,
 		"email":   user.Email,
 	})
 
@@ -271,7 +266,7 @@ func (s *userService) RefreshToken(ctx context.Context, refreshToken string) (*A
 }
 
 // ChangePassword changes user password
-func (s *userService) ChangePassword(ctx context.Context, userID uuid.UUID, form *ChangePasswordForm) error {
+func (s *userService) ChangePassword(ctx context.Context, userID string, form *ChangePasswordForm) error {
 	// Get user
 	user, err := s.repository.GetByID(ctx, userID)
 	if err != nil {
@@ -289,7 +284,7 @@ func (s *userService) ChangePassword(ctx context.Context, userID uuid.UUID, form
 	if err != nil {
 		s.logger.Error("Failed to hash new password", map[string]interface{}{
 			"error":   err.Error(),
-			"user_id": userID.String(),
+			"user_id": userID,
 		})
 		return errors.New("failed to process new password")
 	}
@@ -300,13 +295,13 @@ func (s *userService) ChangePassword(ctx context.Context, userID uuid.UUID, form
 	if err != nil {
 		s.logger.Error("Failed to update password", map[string]interface{}{
 			"error":   err.Error(),
-			"user_id": userID.String(),
+			"user_id": userID,
 		})
 		return errors.New("failed to update password")
 	}
 
 	s.logger.Info("Password changed successfully", map[string]interface{}{
-		"user_id": userID.String(),
+		"user_id": userID,
 	})
 
 	return nil
@@ -326,7 +321,7 @@ func (s *userService) ResetPassword(ctx context.Context, form *ResetPasswordForm
 
 	// TODO: Implement password reset logic (send email with reset link)
 	s.logger.Info("Password reset requested", map[string]interface{}{
-		"user_id": user.ID.String(),
+		"user_id": user.ID,
 		"email":   user.Email,
 	})
 
@@ -334,7 +329,7 @@ func (s *userService) ResetPassword(ctx context.Context, form *ResetPasswordForm
 }
 
 // GetUserByID retrieves a user by ID
-func (s *userService) GetUserByID(ctx context.Context, id uuid.UUID) (*User, error) {
+func (s *userService) GetUserByID(ctx context.Context, id string) (*User, error) {
 	user, err := s.repository.GetByID(ctx, id)
 	if err != nil {
 		return nil, err
@@ -344,30 +339,30 @@ func (s *userService) GetUserByID(ctx context.Context, id uuid.UUID) (*User, err
 }
 
 // GetProfile retrieves the current user's profile
-func (s *userService) GetProfile(ctx context.Context, userID uuid.UUID) (*User, error) {
+func (s *userService) GetProfile(ctx context.Context, userID string) (*User, error) {
 	user, err := s.repository.GetByID(ctx, userID)
 	if err != nil {
 		s.logger.Error("Failed to get user profile", map[string]interface{}{
 			"error":   err.Error(),
-			"user_id": userID.String(),
+			"user_id": userID,
 		})
 		return nil, errors.New("user not found")
 	}
 
 	s.logger.Info("User profile retrieved successfully", map[string]interface{}{
-		"user_id": userID.String(),
+		"user_id": userID,
 	})
 
 	return user, nil
 }
 
 // UpdateProfile updates the current user's profile
-func (s *userService) UpdateProfile(ctx context.Context, userID uuid.UUID, form *UpdateProfileForm) error {
+func (s *userService) UpdateProfile(ctx context.Context, userID string, form *UpdateProfileForm) error {
 	user, err := s.repository.GetByID(ctx, userID)
 	if err != nil {
 		s.logger.Error("Failed to get user for profile update", map[string]interface{}{
 			"error":   err.Error(),
-			"user_id": userID.String(),
+			"user_id": userID,
 		})
 		return errors.New("user not found")
 	}
@@ -397,20 +392,20 @@ func (s *userService) UpdateProfile(ctx context.Context, userID uuid.UUID, form
 	if err != nil {
 		s.logger.Error("Failed to update user profile", map[string]interface{}{
 			"error":   err.Error(),
-			"user_id": userID.String(),
+			"user_id": userID,
 		})
 		return errors.New("failed to update profile")
 	}
 
 	s.logger.Info("User profile updated successfully", map[string]interface{}{
-		"user_id": userID.String(),
+		"user_id": userID,
 	})
 
 	return nil
 }
 
 // UpdateUser updates user information
-func (s *userService) UpdateUser(ctx context.Context, id uuid.UUID, form *UpdateUserForm, updatedBy *uuid.UUID) (*User, error) {
+func (s *userService) UpdateUser(ctx context.Context, id string, form *UpdateUserForm, updatedBy *string) (*User, error) {
 	// Get user
 	user, err := s.repository.GetByID(ctx, id)
 	if err != nil {
@@ -449,11 +444,7 @@ func (s *userService) UpdateUser(ctx context.Context, id uuid.UUID, form *Update
 	}
 
 	if form.CompanyID != nil {
-		parsedID, err := uuid.Parse(*form.CompanyID)
-		if err != nil {
-			return nil, errors.New("invalid company ID")
-		}
-		user.CompanyID = &parsedID
+		user.CompanyID = form.CompanyID
 	}
 
 	if form.Department != nil {
@@ -484,21 +475,21 @@ func (s *userService) UpdateUser(ctx context.Context, id uuid.UUID, form *Update
 	if err != nil {
 		s.logger.Error("Failed to update user", map[string]interface{}{
 			"error":   err.Error(),
-			"user_id": id.String(),
+			"user_id": id,
 		})
 		return nil, errors.New("failed to update user")
 	}
 
 	s.logger.Info("User updated successfully", map[string]interface{}{
-		"user_id":    id.String(),
-		"updated_by": updatedBy.String(),
+		"user_id":    id,
+		"updated_by": *updatedBy,
 	})
 
 	return user, nil
 }
 
 // DeleteUser deletes a user (soft delete)
-func (s *userService) DeleteUser(ctx context.Context, id uuid.UUID, deletedBy *uuid.UUID) error {
+func (s *userService) DeleteUser(ctx context.Context, id string, deletedBy *string) error {
 	// Get user to check if exists
 	user, err := s.repository.GetByID(ctx, id)
 	if err != nil {
@@ -514,14 +505,14 @@ func (s *userService) DeleteUser(ctx context.Context, id uuid.UUID, deletedBy *u
 	if err != nil {
 		s.logger.Error("Failed to delete user", map[string]interface{}{
 			"error":   err.Error(),
-			"user_id": id.String(),
+			"user_id": id,
 		})
 		return errors.New("failed to delete user")
 	}
 
 	s.logger.Info("User deleted successfully", map[string]interface{}{
-		"user_id":    id.String(),
-		"deleted_by": deletedBy.String(),
+		"user_id":    id,
+		"deleted_by": *deletedBy,
 	})
 
 	return nil
@@ -556,13 +547,9 @@ func (s *userService) ListUsers(ctx context.Context, form *ListUsersForm) (*User
 	}
 
 	// Parse company ID if provided
-	var companyID *uuid.UUID
+	var companyID *string
 	if form.CompanyID != nil {
-		parsedID, err := uuid.Parse(*form.CompanyID)
-		if err != nil {
-			return nil, errors.New("invalid company ID")
-		}
-		companyID = &parsedID
+		companyID = form.CompanyID
 	}
 
 	// Get users
@@ -594,7 +581,7 @@ func (s *userService) ListUsers(ctx context.Context, form *ListUsersForm) (*User
 }
 
 // UpdateUserStatus updates user status
-func (s *userService) UpdateUserStatus(ctx context.Context, id uuid.UUID, form *UpdateUserStatusForm, updatedBy *uuid.UUID) error {
+func (s *userService) UpdateUserStatus(ctx context.Context, id string, form *UpdateUserStatusForm, updatedBy *string) error {
 	// Get user
 	user, err := s.repository.GetByID(ctx, id)
 	if err != nil {
@@ -610,23 +597,23 @@ func (s *userService) UpdateUserStatus(ctx context.Context, id uuid.UUID, form *
 	if err != nil {
 		s.logger.Error("Failed to update user status", map[string]interface{}{
 			"error":   err.Error(),
-			"user_id": id.String(),
+			"user_id": id,
 			"status":  form.Status,
 		})
 		return errors.New("failed to update user status")
 	}
 
 	s.logger.Info("User status updated successfully", map[string]interface{}{
-		"user_id":    id.String(),
+		"user_id":    id,
 		"status":     form.Status,
-		"updated_by": updatedBy.String(),
+		"updated_by": *updatedBy,
 	})
 
 	return nil
 }
 
 // UpdateUserRole updates user role
-func (s *userService) UpdateUserRole(ctx context.Context, id uuid.UUID, form *UpdateUserRoleForm, updatedBy *uuid.UUID) error {
+func (s *userService) UpdateUserRole(ctx context.Context, id string, form *UpdateUserRoleForm, updatedBy *string) error {
 	// Get user
 	user, err := s.repository.GetByID(ctx, id)
 	if err != nil {
@@ -648,28 +635,28 @@ func (s *userService) UpdateUserRole(ctx context.Context, id uuid.UUID, form *Up
 	if err != nil {
 		s.logger.Error("Failed to update user role", map[string]interface{}{
 			"error":   err.Error(),
-			"user_id": id.String(),
+			"user_id": id,
 			"role":    form.Role,
 		})
 		return errors.New("failed to update user role")
 	}
 
 	s.logger.Info("User role updated successfully", map[string]interface{}{
-		"user_id":    id.String(),
+		"user_id":    id,
 		"role":       form.Role,
-		"updated_by": updatedBy.String(),
+		"updated_by": *updatedBy,
 	})
 
 	return nil
 }
 
 // GetUsersByCompanyID retrieves users by company ID with pagination
-func (s *userService) GetUsersByCompanyID(ctx context.Context, companyID uuid.UUID, limit, offset int) ([]*User, int64, error) {
+func (s *userService) GetUsersByCompanyID(ctx context.Context, companyID string, limit, offset int) ([]*User, int64, error) {
 	users, err := s.repository.GetByCompanyID(ctx, companyID, limit, offset)
 	if err != nil {
 		s.logger.Error("Failed to get users by company ID", map[string]interface{}{
 			"error":      err.Error(),
-			"company_id": companyID.String(),
+			"company_id": companyID,
 		})
 		return nil, 0, errors.New("failed to get users by company")
 	}
@@ -679,7 +666,7 @@ func (s *userService) GetUsersByCompanyID(ctx context.Context, companyID uuid.UU
 	if err != nil {
 		s.logger.Error("Failed to count users by company ID", map[string]interface{}{
 			"error":      err.Error(),
-			"company_id": companyID.String(),
+			"company_id": companyID,
 		})
 		return users, 0, nil // Return users even if count fails
 	}
@@ -702,19 +689,19 @@ func (s *userService) GetUsersByRole(ctx context.Context, role UserRole, limit,
 }
 
 // Logout logs out a user and invalidates tokens
-func (s *userService) Logout(ctx context.Context, userID uuid.UUID, accessToken string) error {
+func (s *userService) Logout(ctx context.Context, userID string, accessToken string) error {
 	// Invalidate the access token
 	err := s.authService.InvalidateToken(accessToken)
 	if err != nil {
 		s.logger.Error("Failed to invalidate access token", map[string]interface{}{
 			"error":   err.Error(),
-			"user_id": userID.String(),
+			"user_id": userID,
 		})
 		// Don't return error here as the user should still be logged out
 	}
 
 	s.logger.Info("User logged out successfully", map[string]interface{}{
-		"user_id": userID.String(),
+		"user_id": userID,
 	})
 
 	return nil