diff --git a/frontend/src/lib/api/employees.ts b/frontend/src/lib/api/employees.ts
index 0da45a8..a7d5f61 100644
--- a/frontend/src/lib/api/employees.ts
+++ b/frontend/src/lib/api/employees.ts
@@ -1,5 +1,38 @@
 import { api } from '../api'
 
+const toNumber = (v: any): number => {
+  if (v === null || v === undefined || v === '') return 0
+  if (typeof v === 'number') return Number.isFinite(v) ? v : 0
+  const s = typeof v === 'string' ? v : (v?.toString?.() ?? String(v))
+  const cleaned = s.replace(/[^0-9.-]/g, '')
+  const n = Number(cleaned)
+  return Number.isFinite(n) ? n : 0
+}
+
+const normalizeEmployeeFromApi = (e: any) => {
+  const basic = toNumber(e?.basicSalary ?? e?.baseSalary ?? e?.salary)
+  return {
+    ...e,
+    baseSalary: basic,          
+  }
+}
+
+const normalizeEmployeeToApi = (data: any) => {
+  const d = { ...(data || {}) }
+
+  if (d.baseSalary !== undefined) {
+    d.basicSalary = toNumber(d.baseSalary)
+    delete d.baseSalary
+  }
+
+  if (d.salary !== undefined) {
+    d.basicSalary = toNumber(d.salary)
+    delete d.salary
+  }
+
+  return d
+}
+
 export interface Employee {
   id: string
   uniqueEmployeeId: string
@@ -25,7 +58,12 @@ export interface Employee {
   position?: any
   reportingToId?: string
   reportingTo?: any
+
   baseSalary: number
+
+  basicSalary?: any
+
+  currency?: string
   status: string
   createdAt: string
   updatedAt: string
@@ -49,6 +87,7 @@ export interface CreateEmployeeData {
   departmentId: string
   positionId: string
   reportingToId?: string
+
   baseSalary: number
 }
 
@@ -84,8 +123,11 @@ export const employeesAPI = {
 
     const response = await api.get(`/hr/employees?${params.toString()}`)
     const { data, pagination } = response.data
+
+    const normalized = Array.isArray(data) ? data.map(normalizeEmployeeFromApi) : []
+
     return {
-      employees: data || [],
+      employees: normalized,
       total: pagination?.total || 0,
       page: pagination?.page || 1,
       pageSize: pagination?.pageSize || 20,
@@ -96,19 +138,21 @@ export const employeesAPI = {
   // Get single employee by ID
   getById: async (id: string): Promise<Employee> => {
     const response = await api.get(`/hr/employees/${id}`)
-    return response.data.data
+    return normalizeEmployeeFromApi(response.data.data)
   },
 
   // Create new employee
   create: async (data: CreateEmployeeData): Promise<Employee> => {
-    const response = await api.post('/hr/employees', data)
-    return response.data.data
+    const payload = normalizeEmployeeToApi(data)
+    const response = await api.post('/hr/employees', payload)
+    return normalizeEmployeeFromApi(response.data.data)
   },
 
   // Update existing employee
   update: async (id: string, data: UpdateEmployeeData): Promise<Employee> => {
-    const response = await api.put(`/hr/employees/${id}`, data)
-    return response.data.data
+    const payload = normalizeEmployeeToApi(data)
+    const response = await api.put(`/hr/employees/${id}`, payload)
+    return normalizeEmployeeFromApi(response.data.data)
   },
 
   // Delete employee
@@ -131,4 +175,4 @@ export const positionsAPI = {
     const response = await api.get('/hr/positions')
     return response.data.data
   }
-}
+}
\ No newline at end of file