diff --git a/docs/swagger/swagger-spec.json b/docs/swagger/swagger-spec.json
index e36efbd..73f1761 100644
--- a/docs/swagger/swagger-spec.json
+++ b/docs/swagger/swagger-spec.json
@@ -668,7 +668,7 @@
             }
           },
           "400": {
-            "description": "Leave request not found"
+            "description": "List of leave request not found"
           }
         },
         "security": [
@@ -1802,6 +1802,136 @@
           "Auth"
         ]
       }
+    },
+    "/pay-periods": {
+      "get": {
+        "operationId": "PayPeriodsController_findAll",
+        "parameters": [],
+        "responses": {
+          "200": {
+            "description": "List of pay period found",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "type": "array",
+                  "items": {
+                    "$ref": "#/components/schemas/PayPeriodEntity"
+                  }
+                }
+              }
+            }
+          },
+          "400": {
+            "description": "List of pay period not found"
+          }
+        },
+        "summary": "Find all pay period",
+        "tags": [
+          "pay-periods"
+        ]
+      }
+    },
+    "/pay-periods/{periodNumber}": {
+      "get": {
+        "operationId": "PayPeriodsController_findOne",
+        "parameters": [
+          {
+            "name": "periodNumber",
+            "required": true,
+            "in": "path",
+            "schema": {
+              "type": "number"
+            }
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "Pay period found",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/PayPeriodEntity"
+                }
+              }
+            }
+          },
+          "400": {
+            "description": "Pay period not found"
+          }
+        },
+        "summary": "Find pay period",
+        "tags": [
+          "pay-periods"
+        ]
+      }
+    },
+    "/pay-periods/{periodNumber}/overview": {
+      "get": {
+        "operationId": "PayPeriodsController_getOverview",
+        "parameters": [
+          {
+            "name": "periodNumber",
+            "required": true,
+            "in": "path",
+            "schema": {
+              "type": "number"
+            }
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "Pay period overview found",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/PayPeriodOverviewDto"
+                }
+              }
+            }
+          },
+          "400": {
+            "description": "Pay period not found"
+          }
+        },
+        "summary": "detailed view of a pay period",
+        "tags": [
+          "pay-periods"
+        ]
+      }
+    },
+    "/pay-periods/date/{date}": {
+      "get": {
+        "operationId": "PayPeriodsController_findByDate",
+        "parameters": [
+          {
+            "name": "date",
+            "required": true,
+            "in": "path",
+            "schema": {
+              "type": "string"
+            }
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "Pay period found for the selected date",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/PayPeriodEntity"
+                }
+              }
+            }
+          },
+          "400": {
+            "description": "Pay period not found for the selected date date"
+          }
+        },
+        "summary": "cherry picking a date to find a period",
+        "tags": [
+          "pay-periods"
+        ]
+      }
     }
   },
   "info": {
@@ -2906,6 +3036,113 @@
             "description": "Timesheet`s approval status"
           }
         }
+      },
+      "PayPeriodEntity": {
+        "type": "object",
+        "properties": {
+          "period_number": {
+            "type": "number",
+            "example": 1,
+            "description": "numéro cyclique de la période entre 1 et 26"
+          },
+          "start_date": {
+            "type": "string",
+            "example": "2023-12-17",
+            "format": "date"
+          },
+          "end_date": {
+            "type": "string",
+            "example": "2023-12-30",
+            "format": "date"
+          },
+          "year": {
+            "type": "number",
+            "example": 2023
+          },
+          "label": {
+            "type": "string",
+            "example": "2023-12-17 → 2023-12-30"
+          }
+        },
+        "required": [
+          "period_number",
+          "start_date",
+          "end_date",
+          "year",
+          "label"
+        ]
+      },
+      "EmployeePeriodOverviewDto": {
+        "type": "object",
+        "properties": {
+          "employee_id": {
+            "type": "string",
+            "example": "a1b2c3d4",
+            "description": "Employee`s ID"
+          },
+          "employee_name": {
+            "type": "string",
+            "example": "Alex Dupont",
+            "description": "Employee`s full name"
+          },
+          "total_hours": {
+            "type": "number",
+            "example": 34,
+            "description": "period`s total worked hours"
+          },
+          "is_approved": {
+            "type": "boolean",
+            "example": true,
+            "description": "All timesheets are approved for this employee"
+          }
+        },
+        "required": [
+          "employee_id",
+          "employee_name",
+          "total_hours",
+          "is_approved"
+        ]
+      },
+      "PayPeriodOverviewDto": {
+        "type": "object",
+        "properties": {
+          "period_number": {
+            "type": "number",
+            "example": 1,
+            "description": "period`s number ( 1-26 )"
+          },
+          "start_date": {
+            "type": "string",
+            "example": "2023-12-17",
+            "format": "date",
+            "description": "Period`s starting date"
+          },
+          "end_date": {
+            "type": "string",
+            "example": "2023-12-30",
+            "format": "date",
+            "description": "Period`s ending date"
+          },
+          "label": {
+            "type": "string",
+            "example": "2023-12-17 → 2023-12-30",
+            "description": "period`s label for showing"
+          },
+          "employees_overview": {
+            "description": "Detailed view by employee for a chosen period",
+            "type": "array",
+            "items": {
+              "$ref": "#/components/schemas/EmployeePeriodOverviewDto"
+            }
+          }
+        },
+        "required": [
+          "period_number",
+          "start_date",
+          "end_date",
+          "label",
+          "employees_overview"
+        ]
       }
     }
   }
diff --git a/src/app.module.ts b/src/app.module.ts
index ce8cf7b..a870b3e 100644
--- a/src/app.module.ts
+++ b/src/app.module.ts
@@ -15,7 +15,7 @@ import { TimesheetsModule } from './modules/timesheets/timesheets.module';
 import { AuthenticationModule } from './modules/authentication/auth.module';
 import { ExpensesModule } from './modules/expenses/expenses.module';
 import { ExpenseCodesModule } from './modules/expense-codes/expense-codes.module';
-import { PayperiodModule } from './modules/pay-periods/pay-periods.module';
+import { PayperiodsModule } from './modules/pay-periods/pay-periods.module';
 
 @Module({
   imports: [
@@ -32,7 +32,7 @@ import { PayperiodModule } from './modules/pay-periods/pay-periods.module';
       ShiftsModule,
       TimesheetsModule,
       AuthenticationModule,
-      PayperiodModule,
+      PayperiodsModule,
     ],
   controllers: [AppController, HealthController],
   providers: [AppService],
diff --git a/src/modules/pay-periods/controllers/pay-periods.controller.ts b/src/modules/pay-periods/controllers/pay-periods.controller.ts
index 9304b83..229d3e9 100644
--- a/src/modules/pay-periods/controllers/pay-periods.controller.ts
+++ b/src/modules/pay-periods/controllers/pay-periods.controller.ts
@@ -2,9 +2,9 @@ import { Controller, Get, Param, ParseIntPipe } from "@nestjs/common";
 import { PayPeriods } from "@prisma/client";
 import { ApiOperation, ApiResponse, ApiTags } from "@nestjs/swagger";
 import { PayPeriodsService } from "../services/pay-periods.service";
-import { PayPeriodsOverviewService } from "../services/pay-periods-overview.service";
 import { PayPeriodEntity } from "../dtos/swagger-entities/pay-period.entity";
 import { PayPeriodOverviewDto } from "../dtos/overview-pay-period.dto";
+import { PayPeriodsOverviewService } from "../services/pay-periods-overview.service";
 
 
 @ApiTags('pay-periods')
diff --git a/src/modules/pay-periods/pay-periods.module.ts b/src/modules/pay-periods/pay-periods.module.ts
index b1b6bfe..142c582 100644
--- a/src/modules/pay-periods/pay-periods.module.ts
+++ b/src/modules/pay-periods/pay-periods.module.ts
@@ -2,11 +2,15 @@ import { PrismaModule } from "src/prisma/prisma.module";
 import { PayPeriodsService } from "./services/pay-periods.service";
 import { PayPeriodsController } from "./controllers/pay-periods.controller";
 import { Module } from "@nestjs/common";
+import { PayPeriodsOverviewService } from "./services/pay-periods-overview.service";
 
 @Module({
     imports: [PrismaModule],
-    providers: [PayPeriodsService],
+    providers: [
+        PayPeriodsService,
+        PayPeriodsOverviewService,
+    ],
     controllers: [PayPeriodsController],
 })
 
-export class PayperiodModule {}
\ No newline at end of file
+export class PayperiodsModule {}
\ No newline at end of file