diff --git a/prisma/migrations/20240612100121_update_field_to_optional/migration.sql b/prisma/migrations/20240612100121_update_field_to_optional/migration.sql
new file mode 100644
index 0000000..72c9e76
--- /dev/null
+++ b/prisma/migrations/20240612100121_update_field_to_optional/migration.sql
@@ -0,0 +1,12 @@
+-- AlterTable
+ALTER TABLE "Employee" ALTER COLUMN "address" DROP NOT NULL,
+ALTER COLUMN "addressEN" DROP NOT NULL,
+ALTER COLUMN "entryDate" DROP NOT NULL,
+ALTER COLUMN "tm6Number" DROP NOT NULL,
+ALTER COLUMN "visaExpiryDate" DROP NOT NULL,
+ALTER COLUMN "visaIssueDate" DROP NOT NULL,
+ALTER COLUMN "visaIssuingPlace" DROP NOT NULL,
+ALTER COLUMN "visaNumber" DROP NOT NULL,
+ALTER COLUMN "visaStayUntilDate" DROP NOT NULL,
+ALTER COLUMN "visaType" DROP NOT NULL,
+ALTER COLUMN "workerStatus" DROP NOT NULL;
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index 1f67779..7a695e3 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -415,8 +415,8 @@ model Employee {
   gender      String
   nationality String
 
-  address   String
-  addressEN String
+  address   String?
+  addressEN String?
 
   province   Province? @relation(fields: [provinceId], references: [id], onDelete: SetNull)
   provinceId String?
@@ -437,15 +437,15 @@ model Employee {
   passportIssuingPlace      String
   previousPassportReference String?
 
-  visaType          String
-  visaNumber        String
-  visaIssueDate     DateTime
-  visaExpiryDate    DateTime
-  visaIssuingPlace  String
-  visaStayUntilDate DateTime
-  tm6Number         String
-  entryDate         DateTime
-  workerStatus      String
+  visaType          String?
+  visaNumber        String?
+  visaIssueDate     DateTime?
+  visaExpiryDate    DateTime?
+  visaIssuingPlace  String?
+  visaStayUntilDate DateTime?
+  tm6Number         String?
+  entryDate         DateTime?
+  workerStatus      String?
 
   customerBranch   CustomerBranch? @relation(fields: [customerBranchId], references: [id], onDelete: SetNull)
   customerBranchId String?
diff --git a/src/controllers/employee-controller.ts b/src/controllers/employee-controller.ts
index 54d90cf..c436d2e 100644
--- a/src/controllers/employee-controller.ts
+++ b/src/controllers/employee-controller.ts
@@ -57,15 +57,15 @@ type EmployeeCreate = {
   passportIssuingPlace: string;
   previousPassportReference?: string;
 
-  visaType: string;
-  visaNumber: string;
-  visaIssueDate: Date;
-  visaExpiryDate: Date;
-  visaIssuingPlace: string;
-  visaStayUntilDate: Date;
-  tm6Number: string;
-  entryDate: Date;
-  workerStatus: string;
+  visaType?: string | null;
+  visaNumber?: string | null;
+  visaIssueDate?: Date | null;
+  visaExpiryDate?: Date | null;
+  visaIssuingPlace?: string | null;
+  visaStayUntilDate?: Date | null;
+  tm6Number?: string | null;
+  entryDate?: Date | null;
+  workerStatus?: string | null;
 
   subDistrictId?: string | null;
   districtId?: string | null;
@@ -140,15 +140,15 @@ type EmployeeUpdate = {
   passportIssuingPlace?: string;
   previousPassportReference?: string;
 
-  visaType?: string;
-  visaNumber?: string;
-  visaIssueDate?: Date;
-  visaExpiryDate?: Date;
-  visaIssuingPlace?: string;
-  visaStayUntilDate?: Date;
-  tm6Number?: string;
-  entryDate?: Date;
-  workerStatus?: string;
+  visaType?: string | null;
+  visaNumber?: string | null;
+  visaIssueDate?: Date | null;
+  visaExpiryDate?: Date | null;
+  visaIssuingPlace?: string | null;
+  visaStayUntilDate?: Date | null;
+  tm6Number?: string | null;
+  entryDate?: Date | null;
+  workerStatus?: string | null;
 
   subDistrictId?: string | null;
   districtId?: string | null;