diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index 5a03063..05b9dfa 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -323,12 +323,12 @@ model Preferences {
 }
 
 model PaidTimeOff {
-  id             Int      @id @default(autoincrement())
-  employee_id    Int      @unique
-  vacation_hours Decimal  @default(0) @db.Decimal(12, 2)
-  banked_hours   Decimal  @default(0) @db.Decimal(12, 2)
-  sick_hours     Decimal  @default(0) @db.Decimal(12, 2)
-  last_updated   DateTime @db.Date
+  id             Int        @id @default(autoincrement())
+  employee_id    Int        @unique
+  vacation_hours Decimal    @default(0) @db.Decimal(12, 2)
+  banked_hours   Decimal    @default(0) @db.Decimal(12, 2)
+  sick_hours     Decimal    @default(0) @db.Decimal(12, 2)
+  last_updated   DateTime?  @db.Date
 
   employee Employees @relation("EmployeePaidTimeOff", fields: [employee_id], references: [id])
 
diff --git a/src/identity-and-account/employees/services/employees-get.service.ts b/src/identity-and-account/employees/services/employees-get.service.ts
index 40e24bb..426f1c2 100644
--- a/src/identity-and-account/employees/services/employees-get.service.ts
+++ b/src/identity-and-account/employees/services/employees-get.service.ts
@@ -120,7 +120,7 @@ export class EmployeesGetService {
                 paid_time_off: {
                     vacation_hours: existing_profile.paid_time_off?.vacation_hours.toNumber() ?? 0,
                     banked_hours: existing_profile.paid_time_off?.banked_hours.toNumber() ?? 0,
-                    last_updated: existing_profile.paid_time_off?.last_updated.toISOString().slice(0, 10) ?? '',
+                    last_updated: existing_profile.paid_time_off?.last_updated?.toISOString() ?? null,
                 },
                 is_supervisor: existing_profile.is_supervisor,
                 phone_number: existing_profile.user.phone_number,
@@ -212,7 +212,7 @@ export class EmployeesGetService {
                     sick_hours: employee.paid_time_off?.sick_hours.toNumber() ?? 0,
                     vacation_hours: employee.paid_time_off?.vacation_hours.toNumber() ?? 0,
                     banked_hours: employee.paid_time_off?.banked_hours.toNumber() ?? 0,
-                    last_updated: employee.paid_time_off?.last_updated.toISOString().slice(0, 10) ?? '',
+                    last_updated: employee.paid_time_off?.last_updated?.toISOString() ?? null,
                 },
                 employee_full_name: `${employee.user.first_name} ${employee.user.last_name}`,
                 first_work_day: toStringFromDate(employee.first_work_day),
diff --git a/src/identity-and-account/employees/services/employees-update.service.ts b/src/identity-and-account/employees/services/employees-update.service.ts
index 7bb28e1..19c1504 100644
--- a/src/identity-and-account/employees/services/employees-update.service.ts
+++ b/src/identity-and-account/employees/services/employees-update.service.ts
@@ -67,6 +67,7 @@ export class EmployeesUpdateService {
             });
 
             const employee_pto = dto.paid_time_off ?? new PaidTimeOffDto(employee.id);
+            const last_updated = employee_pto.last_updated ? toDateFromString(employee_pto.last_updated) : null;
 
             await tx.paidTimeOff.upsert({
                 where: { employee_id: employee_pto.employee_id },
@@ -74,14 +75,14 @@ export class EmployeesUpdateService {
                     sick_hours: employee_pto.sick_hours,
                     vacation_hours: employee_pto.vacation_hours,
                     banked_hours: employee_pto.banked_hours,
-                    last_updated: employee_pto.last_updated,
+                    last_updated: last_updated,
                 },
                 create: {
                     employee_id: employee_pto.employee_id,
                     sick_hours: employee_pto.sick_hours,
                     vacation_hours: employee_pto.vacation_hours,
                     banked_hours: employee_pto.banked_hours,
-                    last_updated: employee_pto.last_updated,
+                    last_updated: last_updated,
                 }
             })
 
diff --git a/src/time-and-attendance/domains/paid-time-off.dto.ts b/src/time-and-attendance/domains/paid-time-off.dto.ts
index 3dd12c0..a9f5476 100644
--- a/src/time-and-attendance/domains/paid-time-off.dto.ts
+++ b/src/time-and-attendance/domains/paid-time-off.dto.ts
@@ -1,5 +1,5 @@
 import { Type } from "class-transformer";
-import { IsDateString, IsDecimal, IsInt, IsNotEmpty, IsNumber, IsOptional } from "class-validator";
+import { IsString, IsInt, IsNotEmpty, IsOptional } from "class-validator";
 
 export class PaidTimeOffDto {
     @IsInt() id: number;
@@ -7,7 +7,7 @@ export class PaidTimeOffDto {
     @IsOptional() @Type(() => Number) vacation_hours?: number;
     @IsOptional() @Type(() => Number) sick_hours?: number;
     @IsOptional() @Type(() => Number) banked_hours?: number;
-    @IsDateString() @IsOptional() last_updated: string;
+    @IsString() @IsOptional() last_updated?: string | null;
 
     constructor(employee_id: number) {
         this.employee_id = employee_id;
diff --git a/src/time-and-attendance/domains/services/sick-leave.service.ts b/src/time-and-attendance/domains/services/sick-leave.service.ts
index 30e3c6d..db74b52 100644
--- a/src/time-and-attendance/domains/services/sick-leave.service.ts
+++ b/src/time-and-attendance/domains/services/sick-leave.service.ts
@@ -54,8 +54,8 @@ export class SickLeaveService {
             if (!updated_pto.success) return { success: updated_pto.success, error: updated_pto.error }
         }
 
-        const year_difference = today.getFullYear() - (pto_details!.last_updated.getFullYear() ?? today.getFullYear());
-        const months_since_last_update = (today.getMonth() + year_difference * 12) - pto_details!.last_updated.getMonth();
+        const year_difference = today.getFullYear() - (pto_details!.last_updated?.getFullYear() ?? today.getFullYear());
+        const months_since_last_update = (today.getMonth() + year_difference * 12) - (pto_details!.last_updated?.getMonth() ?? 0);
 
         if (months_since_last_update > 0) {
             const updated_pto = await this.addHoursToPTO(months_since_last_update * 8, employee.id, today);