diff --git a/package-lock.json b/package-lock.json
index 01ac1f2..e1e33bd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6615,9 +6615,9 @@
       }
     },
     "node_modules/form-data": {
-      "version": "4.0.3",
-      "resolved": "https://registry.npmjs.org/form-data/-/form-data-4.0.3.tgz",
-      "integrity": "sha512-qsITQPfmvMOSAdeyZ+12I1c+CKSstAFAwu+97zrnWAbIr5u8wfsExUzCesVLC8NgHuRUqNN4Zy6UPWUTRGslcA==",
+      "version": "4.0.4",
+      "resolved": "https://registry.npmjs.org/form-data/-/form-data-4.0.4.tgz",
+      "integrity": "sha512-KrGhL9Q4zjj0kiUt5OO4Mr/A/jlI2jDYs5eHBpYHPcBEVSiipAvn2Ko2HnPe20rmcuuvMHNdZFp+4IlGTMF0Ow==",
       "dev": true,
       "dependencies": {
         "asynckit": "^0.4.0",
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index cfb79d2..a7bb477 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -14,50 +14,49 @@ datasource db {
 }
 
 model Users {
-  id                    String                @id @default(dbgenerated("gen_random_uuid()")) @db.Uuid
-  first_name            String
-  last_name             String
-  email                 String                @unique
-  phone_number          Int                   @unique
-  residence             String?
-  role                  Roles                 @default(GUEST)
+  id           String  @id @default(dbgenerated("gen_random_uuid()")) @db.Uuid
+  first_name   String
+  last_name    String
+  email        String  @unique
+  phone_number Int     @unique
+  residence    String?
+  role         Roles   @default(GUEST)
 
-
-  employee              Employees?            @relation("UserEmployee")
-  customer              Customers?            @relation("UserCustomer")
-  oauth_access_tokens   OAuthAccessTokens[]   @relation("UserOAuthAccessToken")
+  employee            Employees?          @relation("UserEmployee")
+  customer            Customers?          @relation("UserCustomer")
+  oauth_access_tokens OAuthAccessTokens[] @relation("UserOAuthAccessToken")
 
   @@map("users")
 }
 
 model Employees {
-  id                   Int            @id @default(autoincrement())
-  user                 Users          @relation("UserEmployee", fields: [user_id], references:[id])
-  user_id              String         @unique @db.Uuid
-  external_payroll_id  Int            
-  company_code         Int     
-  first_work_day       DateTime
-  last_work_day        DateTime?
+  id                  Int       @id @default(autoincrement())
+  user                Users     @relation("UserEmployee", fields: [user_id], references: [id])
+  user_id             String    @unique @db.Uuid
+  external_payroll_id Int
+  company_code        Int
+  first_work_day      DateTime
+  last_work_day       DateTime?
 
-  timesheet            Timesheets[]   @relation("TimesheetEmployee")
-  leave_request        LeaveRequests[] @relation("LeaveRequestEmployee")
+  timesheet     Timesheets[]    @relation("TimesheetEmployee")
+  leave_request LeaveRequests[] @relation("LeaveRequestEmployee")
 
   @@map("employees")
 }
 
 model Customers {
-  id                  Int     @id @default(autoincrement())
-  user                Users   @relation("UserCustomer", fields: [user_id], references:[id])
-  user_id             String  @unique @db.Uuid
-  invoice_id          Int?    @unique
+  id         Int    @id @default(autoincrement())
+  user       Users  @relation("UserCustomer", fields: [user_id], references: [id])
+  user_id    String @unique @db.Uuid
+  invoice_id Int?   @unique
 
   @@map("customers")
 }
 
 model LeaveRequests {
   id              Int                 @id @default(autoincrement())
-  employee        Employees           @relation("LeaveRequestEmployee", fields: [employee_id], references:[id])
-  employee_id     Int                 
+  employee        Employees           @relation("LeaveRequestEmployee", fields: [employee_id], references: [id])
+  employee_id     Int
   leave_type      LeaveTypes
   start_date_time DateTime
   end_date_time   DateTime?
@@ -68,23 +67,23 @@ model LeaveRequests {
 }
 
 model Timesheets {
-  id            Int         @id @default(autoincrement())
-  employee      Employees   @relation("TimesheetEmployee", fields: [employee_id], references:[id])
-  employee_id   Int         
-  is_approved   Boolean     @default(false)
+  id          Int       @id @default(autoincrement())
+  employee    Employees @relation("TimesheetEmployee", fields: [employee_id], references: [id])
+  employee_id Int
+  is_approved Boolean   @default(false)
 
-
-  shift         Shifts[]     @relation("ShiftTimesheet")
+  shift   Shifts[]   @relation("ShiftTimesheet")
+  expense Expenses[] @relation("ExpensesTimesheet")
 
   @@map("timesheets")
 }
 
 model Shifts {
-  id            Int         @id @default(autoincrement())
-  timesheet     Timesheets  @relation("ShiftTimesheet", fields: [timesheet_id], references: [id])
-  timesheet_id  Int         
-  shift_code    ShiftCodes  @relation("ShiftShiftCode", fields: [shift_code_id], references: [id])
-  shift_code_id Int         
+  id            Int        @id @default(autoincrement())
+  timesheet     Timesheets @relation("ShiftTimesheet", fields: [timesheet_id], references: [id])
+  timesheet_id  Int
+  shift_code    ShiftCodes @relation("ShiftShiftCode", fields: [shift_code_id], references: [id])
+  shift_code_id Int
   date          DateTime
   start_time    DateTime
   end_time      DateTime
@@ -93,29 +92,50 @@ model Shifts {
 }
 
 model ShiftCodes {
-  id          Int     @id @default(autoincrement())
-  shift_type  String
-  bank_code   String
+  id         Int    @id @default(autoincrement())
+  shift_type String
+  bank_code  String
 
-
-  shift       Shifts[] @relation("ShiftShiftCode")
+  shift Shifts[] @relation("ShiftShiftCode")
 
   @@map("shift_codes")
 }
 
+model Expenses {
+  id                 Int          @id @default(autoincrement())
+  timesheet          Timesheets   @relation("ExpensesTimesheet", fields: [timesheet_id], references: [id])
+  timesheet_id       Int
+  expense_code       ExpenseCodes @relation("ExpenseExpenseCode", fields: [expense_code_id], references: [id])
+  expense_code_id    Int
+  date               DateTime
+  amount             Float
+  attachement        String?
+  description        String?
+  is_approved        Boolean      @default(false)
+  supervisor_comment String?
+}
+
+model ExpenseCodes {
+  id           Int    @id @default(autoincrement())
+  expense_type String
+  bank_code    String
+
+  expense Expenses[] @relation("ExpenseExpenseCode")
+}
+
 model OAuthAccessTokens {
-  id                    String    @id @default(cuid())
-  user                  Users     @relation("UserOAuthAccessToken", fields: [user_id], references: [id])
-  user_id               String    @db.Uuid
-  application           String
-  access_token          String    @unique
-  refresh_token         String    @unique
-  access_token_expiry   DateTime
-  refresh_token_expiry  DateTime?
-  is_revoked            Boolean   @default(false)
-  scopes                Json      @default("[]")
-  created_at            DateTime  @default(now())
-  updated_at            DateTime?
+  id                   String    @id @default(cuid())
+  user                 Users     @relation("UserOAuthAccessToken", fields: [user_id], references: [id])
+  user_id              String    @db.Uuid
+  application          String
+  access_token         String    @unique
+  refresh_token        String    @unique
+  access_token_expiry  DateTime
+  refresh_token_expiry DateTime?
+  is_revoked           Boolean   @default(false)
+  scopes               Json      @default("[]")
+  created_at           DateTime  @default(now())
+  updated_at           DateTime?
 
   @@map("refresh_tokens")
 }
@@ -134,12 +154,12 @@ enum Roles {
 }
 
 enum LeaveTypes {
-  SICK            // maladie ou repos
-  VACATION        // paye
-  UNPAID          // non-paye
-  BEREAVEMENT     // deuil de famille
-  PARENTAL        // maternite/paternite/adoption
-  LEGAL           // obligations legales comme devoir de juree
+  SICK // maladie ou repos
+  VACATION // paye
+  UNPAID // non-paye
+  BEREAVEMENT // deuil de famille
+  PARENTAL // maternite/paternite/adoption
+  LEGAL // obligations legales comme devoir de juree
 
   @@map("leave_types")
 }
@@ -152,4 +172,4 @@ enum LeaveApprovalStatus {
   ESCALATED
 
   @@map("leave_approval_status")
-}
\ No newline at end of file
+}