diff --git a/backend/src/controllers/employeeController.ts b/backend/src/controllers/employeeController.ts
new file mode 100644
index 0000000..8c8625b
--- /dev/null
+++ b/backend/src/controllers/employeeController.ts
@@ -0,0 +1,255 @@
+// backend/src/controllers/employeeController.ts
+import { Request, Response } from 'express';
+import { v4 as uuidv4 } from 'uuid';
+import bcrypt from 'bcryptjs';
+import { db } from '../services/databaseService.js';
+import { AuthRequest } from '../middleware/auth.js';
+
+export const getEmployees = async (req: AuthRequest, res: Response): Promise<void> => {
+  try {
+    const employees = await db.all<any>(`
+      SELECT 
+        id, email, name, role, is_active as isActive, 
+        phone, department, created_at as createdAt, 
+        last_login as lastLogin
+      FROM users 
+      ORDER BY name
+    `);
+
+    res.json(employees);
+  } catch (error) {
+    console.error('Error fetching employees:', error);
+    res.status(500).json({ error: 'Internal server error' });
+  }
+};
+
+export const getEmployee = async (req: AuthRequest, res: Response): Promise<void> => {
+  try {
+    const { id } = req.params;
+
+    const employee = await db.get<any>(`
+      SELECT 
+        id, email, name, role, is_active as isActive, 
+        phone, department, created_at as createdAt, 
+        last_login as lastLogin
+      FROM users 
+      WHERE id = ?
+    `, [id]);
+
+    if (!employee) {
+      res.status(404).json({ error: 'Employee not found' });
+      return;
+    }
+
+    res.json(employee);
+  } catch (error) {
+    console.error('Error fetching employee:', error);
+    res.status(500).json({ error: 'Internal server error' });
+  }
+};
+
+export const createEmployee = async (req: AuthRequest, res: Response): Promise<void> => {
+  try {
+    const { email, password, name, role, phone, department } = req.body;
+
+    // Validierung
+    if (!email || !password || !name || !role) {
+      res.status(400).json({ error: 'Email, password, name and role are required' });
+      return;
+    }
+
+    if (password.length < 6) {
+      res.status(400).json({ error: 'Password must be at least 6 characters long' });
+      return;
+    }
+
+    // Check if email already exists
+    const existingUser = await db.get<any>('SELECT id FROM users WHERE email = ?', [email]);
+    if (existingUser) {
+      res.status(409).json({ error: 'Email already exists' });
+      return;
+    }
+
+    // Hash password
+    const hashedPassword = await bcrypt.hash(password, 10);
+    const employeeId = uuidv4();
+
+    await db.run(
+      `INSERT INTO users (id, email, password, name, role, phone, department, is_active) 
+       VALUES (?, ?, ?, ?, ?, ?, ?, ?)`,
+      [employeeId, email, hashedPassword, name, role, phone, department, 1]
+    );
+
+    // Return employee without password
+    const newEmployee = await db.get<any>(`
+      SELECT 
+        id, email, name, role, is_active as isActive, 
+        phone, department, created_at as createdAt, 
+        last_login as lastLogin
+      FROM users 
+      WHERE id = ?
+    `, [employeeId]);
+
+    res.status(201).json(newEmployee);
+  } catch (error) {
+    console.error('Error creating employee:', error);
+    res.status(500).json({ error: 'Internal server error' });
+  }
+};
+
+export const updateEmployee = async (req: AuthRequest, res: Response): Promise<void> => {
+  try {
+    const { id } = req.params;
+    const { name, role, isActive, phone, department } = req.body;
+
+    // Check if employee exists
+    const existingEmployee = await db.get('SELECT * FROM users WHERE id = ?', [id]);
+    if (!existingEmployee) {
+      res.status(404).json({ error: 'Employee not found' });
+      return;
+    }
+
+    // Update employee
+    await db.run(
+      `UPDATE users 
+       SET name = COALESCE(?, name),
+           role = COALESCE(?, role),
+           is_active = COALESCE(?, is_active),
+           phone = COALESCE(?, phone),
+           department = COALESCE(?, department)
+       WHERE id = ?`,
+      [name, role, isActive, phone, department, id]
+    );
+
+    // Return updated employee
+    const updatedEmployee = await db.get<any>(`
+      SELECT 
+        id, email, name, role, is_active as isActive, 
+        phone, department, created_at as createdAt, 
+        last_login as lastLogin
+      FROM users 
+      WHERE id = ?
+    `, [id]);
+
+    res.json(updatedEmployee);
+  } catch (error) {
+    console.error('Error updating employee:', error);
+    res.status(500).json({ error: 'Internal server error' });
+  }
+};
+
+export const deleteEmployee = async (req: AuthRequest, res: Response): Promise<void> => {
+  try {
+    const { id } = req.params;
+
+    // Check if employee exists
+    const existingEmployee = await db.get('SELECT * FROM users WHERE id = ?', [id]);
+    if (!existingEmployee) {
+      res.status(404).json({ error: 'Employee not found' });
+      return;
+    }
+
+    // Soft delete - set is_active to false
+    await db.run('UPDATE users SET is_active = 0 WHERE id = ?', [id]);
+
+    res.status(204).send();
+  } catch (error) {
+    console.error('Error deleting employee:', error);
+    res.status(500).json({ error: 'Internal server error' });
+  }
+};
+
+export const getAvailabilities = async (req: AuthRequest, res: Response): Promise<void> => {
+  try {
+    const { employeeId } = req.params;
+
+    // Check if employee exists
+    const existingEmployee = await db.get('SELECT id FROM users WHERE id = ?', [employeeId]);
+    if (!existingEmployee) {
+      res.status(404).json({ error: 'Employee not found' });
+      return;
+    }
+
+    const availabilities = await db.all<any>(`
+      SELECT * FROM employee_availabilities 
+      WHERE employee_id = ? 
+      ORDER BY day_of_week, start_time
+    `, [employeeId]);
+
+    res.json(availabilities.map(avail => ({
+      id: avail.id,
+      employeeId: avail.employee_id,
+      dayOfWeek: avail.day_of_week,
+      startTime: avail.start_time,
+      endTime: avail.end_time,
+      isAvailable: avail.is_available === 1
+    })));
+  } catch (error) {
+    console.error('Error fetching availabilities:', error);
+    res.status(500).json({ error: 'Internal server error' });
+  }
+};
+
+export const updateAvailabilities = async (req: AuthRequest, res: Response): Promise<void> => {
+  try {
+    const { employeeId } = req.params;
+    const availabilities = req.body;
+
+    // Check if employee exists
+    const existingEmployee = await db.get('SELECT id FROM users WHERE id = ?', [employeeId]);
+    if (!existingEmployee) {
+      res.status(404).json({ error: 'Employee not found' });
+      return;
+    }
+
+    await db.run('BEGIN TRANSACTION');
+
+    try {
+      // Delete existing availabilities
+      await db.run('DELETE FROM employee_availabilities WHERE employee_id = ?', [employeeId]);
+
+      // Insert new availabilities
+      for (const availability of availabilities) {
+        const availabilityId = uuidv4();
+        await db.run(
+          `INSERT INTO employee_availabilities (id, employee_id, day_of_week, start_time, end_time, is_available) 
+           VALUES (?, ?, ?, ?, ?, ?)`,
+          [
+            availabilityId,
+            employeeId,
+            availability.dayOfWeek,
+            availability.startTime,
+            availability.endTime,
+            availability.isAvailable ? 1 : 0
+          ]
+        );
+      }
+
+      await db.run('COMMIT');
+
+      // Return updated availabilities
+      const updatedAvailabilities = await db.all<any>(`
+        SELECT * FROM employee_availabilities 
+        WHERE employee_id = ? 
+        ORDER BY day_of_week, start_time
+      `, [employeeId]);
+
+      res.json(updatedAvailabilities.map(avail => ({
+        id: avail.id,
+        employeeId: avail.employee_id,
+        dayOfWeek: avail.day_of_week,
+        startTime: avail.start_time,
+        endTime: avail.end_time,
+        isAvailable: avail.is_available === 1
+      })));
+
+    } catch (error) {
+      await db.run('ROLLBACK');
+      throw error;
+    }
+
+  } catch (error) {
+    console.error('Error updating availabilities:', error);
+    res.status(500).json({ error: 'Internal server error' });
+  }
+};
\ No newline at end of file
diff --git a/backend/src/database/schema.sql b/backend/src/database/schema.sql
index e463d21..7ca459e 100644
--- a/backend/src/database/schema.sql
+++ b/backend/src/database/schema.sql
@@ -21,4 +21,20 @@ CREATE TABLE IF NOT EXISTS assigned_shifts (
   required_employees INTEGER DEFAULT 1,
   assigned_employees TEXT DEFAULT '[]', -- JSON array of user IDs
   FOREIGN KEY (shift_plan_id) REFERENCES shift_plans(id) ON DELETE CASCADE
-);
\ No newline at end of file
+);
+
+-- Zusätzliche Tabelle für Mitarbeiter-Verfügbarkeiten
+CREATE TABLE IF NOT EXISTS employee_availabilities (
+  id TEXT PRIMARY KEY,
+  employee_id TEXT NOT NULL,
+  day_of_week INTEGER NOT NULL CHECK (day_of_week >= 0 AND day_of_week <= 6),
+  start_time TEXT NOT NULL,
+  end_time TEXT NOT NULL,
+  is_available BOOLEAN DEFAULT FALSE,
+  FOREIGN KEY (employee_id) REFERENCES users(id) ON DELETE CASCADE
+);
+
+-- Users Tabelle erweitern um zusätzliche Felder
+ALTER TABLE users ADD COLUMN phone TEXT;
+ALTER TABLE users ADD COLUMN department TEXT;
+ALTER TABLE users ADD COLUMN is_active BOOLEAN DEFAULT TRUE;
\ No newline at end of file
diff --git a/backend/src/models/Employee.ts b/backend/src/models/Employee.ts
new file mode 100644
index 0000000..a65c30a
--- /dev/null
+++ b/backend/src/models/Employee.ts
@@ -0,0 +1,39 @@
+// backend/src/models/Employee.ts
+export interface Employee {
+  id: string;
+  email: string;
+  password: string;
+  name: string;
+  role: 'admin' | 'instandhalter' | 'user';
+  isActive: boolean;
+  phone?: string;
+  department?: string;
+  createdAt: string;
+  lastLogin?: string;
+}
+
+export interface Availability {
+  id: string;
+  employeeId: string;
+  dayOfWeek: number;
+  startTime: string;
+  endTime: string;
+  isAvailable: boolean;
+}
+
+export interface CreateEmployeeRequest {
+  email: string;
+  password: string;
+  name: string;
+  role: 'admin' | 'instandhalter' | 'user';
+  phone?: string;
+  department?: string;
+}
+
+export interface UpdateEmployeeRequest {
+  name?: string;
+  role?: 'admin' | 'instandhalter' | 'user';
+  isActive?: boolean;
+  phone?: string;
+  department?: string;
+}
\ No newline at end of file
diff --git a/backend/src/routes/employees.ts b/backend/src/routes/employees.ts
new file mode 100644
index 0000000..dc6492e
--- /dev/null
+++ b/backend/src/routes/employees.ts
@@ -0,0 +1,30 @@
+// backend/src/routes/employees.ts
+import express from 'express';
+import { authMiddleware, requireRole } from '../middleware/auth.js';
+import {
+  getEmployees,
+  getEmployee,
+  createEmployee,
+  updateEmployee,
+  deleteEmployee,
+  getAvailabilities,
+  updateAvailabilities
+} from '../controllers/employeeController.js';
+
+const router = express.Router();
+
+// Alle Routes benötigen Authentication
+router.use(authMiddleware);
+
+// Employee CRUD Routes
+router.get('/', requireRole(['admin', 'instandhalter']), getEmployees);
+router.get('/:id', requireRole(['admin', 'instandhalter']), getEmployee);
+router.post('/', requireRole(['admin']), createEmployee);
+router.put('/:id', requireRole(['admin']), updateEmployee);
+router.delete('/:id', requireRole(['admin']), deleteEmployee);
+
+// Availability Routes
+router.get('/:employeeId/availabilities', requireRole(['admin', 'instandhalter']), getAvailabilities);
+router.put('/:employeeId/availabilities', requireRole(['admin', 'instandhalter']), updateAvailabilities);
+
+export default router;
\ No newline at end of file
diff --git a/backend/src/scripts/seedData.ts b/backend/src/scripts/seedData.ts
index 6e7e652..c02bb28 100644
--- a/backend/src/scripts/seedData.ts
+++ b/backend/src/scripts/seedData.ts
@@ -1,24 +1,66 @@
-// backend/src/scripts/seedData.ts
-import { db } from '../services/databaseService';
+// backend/src/scripts/seedData.ts - Erweitert
+import { db } from '../services/databaseService.js';
 import { v4 as uuidv4 } from 'uuid';
 import bcrypt from 'bcryptjs';
 
 export const seedData = async () => {
   try {
+    console.log('Starting database seeding...');
+
     // Admin User erstellen
     const adminId = uuidv4();
     const hashedPassword = await bcrypt.hash('admin123', 10);
     
     await db.run(
-      `INSERT OR IGNORE INTO users (id, email, password, name, role) VALUES (?, ?, ?, ?, ?)`,
-      [adminId, 'admin@schichtplan.de', hashedPassword, 'System Administrator', 'admin']
+      `INSERT OR IGNORE INTO users (id, email, password, name, role, phone, department, is_active) 
+       VALUES (?, ?, ?, ?, ?, ?, ?, ?)`,
+      [adminId, 'admin@schichtplan.de', hashedPassword, 'System Administrator', 'admin', '+49 123 456789', 'IT', 1]
     );
 
+    // Test-Mitarbeiter erstellen
+    const testUsers = [
+      {
+        id: uuidv4(),
+        email: 'instandhalter@schichtplan.de',
+        password: await bcrypt.hash('instandhalter123', 10),
+        name: 'Max Instandhalter',
+        role: 'instandhalter',
+        phone: '+49 123 456790',
+        department: 'Produktion'
+      },
+      {
+        id: uuidv4(),
+        email: 'mitarbeiter1@schichtplan.de',
+        password: await bcrypt.hash('user123', 10),
+        name: 'Anna Müller',
+        role: 'user',
+        phone: '+49 123 456791',
+        department: 'Logistik'
+      },
+      {
+        id: uuidv4(),
+        email: 'mitarbeiter2@schichtplan.de',
+        password: await bcrypt.hash('user123', 10),
+        name: 'Tom Schmidt',
+        role: 'user',
+        phone: '+49 123 456792',
+        department: 'Produktion'
+      }
+    ];
+
+    for (const user of testUsers) {
+      await db.run(
+        `INSERT OR IGNORE INTO users (id, email, password, name, role, phone, department, is_active) 
+         VALUES (?, ?, ?, ?, ?, ?, ?, ?)`,
+        [user.id, user.email, user.password, user.name, user.role, user.phone, user.department, 1]
+      );
+    }
+
     // Standard Vorlage erstellen
     const templateId = uuidv4();
-    
     await db.run(
-      `INSERT OR IGNORE INTO shift_templates (id, name, description, is_default, created_by) VALUES (?, ?, ?, ?, ?)`,
+      `INSERT OR IGNORE INTO shift_templates (id, name, description, is_default, created_by) 
+       VALUES (?, ?, ?, ?, ?)`,
       [templateId, 'Standard Woche', 'Standard Schichtplan für Montag bis Freitag', 1, adminId]
     );
 
@@ -37,16 +79,14 @@ export const seedData = async () => {
 
     for (const shift of shifts) {
       await db.run(
-        `INSERT OR IGNORE INTO template_shifts (id, template_id, day_of_week, name, start_time, end_time, required_employees) VALUES (?, ?, ?, ?, ?, ?, ?)`,
+        `INSERT OR IGNORE INTO template_shifts (id, template_id, day_of_week, name, start_time, end_time, required_employees) 
+         VALUES (?, ?, ?, ?, ?, ?, ?)`,
         [uuidv4(), templateId, shift.day, shift.name, shift.start, shift.end, shift.employees]
       );
     }
 
-    console.log('Test data seeded successfully');
+    console.log('✅ Test data seeded successfully');
   } catch (error) {
-    console.error('Error seeding test data:', error);
+    console.error('❌ Error seeding test data:', error);
   }
-};
-
-// Beim Start ausführen
-seedData();
\ No newline at end of file
+};
\ No newline at end of file
diff --git a/backend/src/server.ts b/backend/src/server.ts
index 34753bb..01d1438 100644
--- a/backend/src/server.ts
+++ b/backend/src/server.ts
@@ -1,18 +1,31 @@
-const express = require('express');
-const cors = require('cors');
-const sqlite3 = require('sqlite3').verbose();
-const path = require('path');
+// backend/src/server.ts - Erweitert
+import express from 'express';
+import cors from 'cors';
+import { db } from './services/databaseService.js';
+import { seedData } from './scripts/seedData.js';
+import authRoutes from './routes/auth.js';
+import shiftTemplateRoutes from './routes/shiftTemplates.js';
+import shiftPlanRoutes from './routes/shiftPlans.js';
+import employeeRoutes from './routes/employees.js'; // NEU HINZUGEFÜGT
 
 const app = express();
-const PORT = process.env.PORT || 3002;
+const PORT = 3002;
 
 // Middleware
-app.use(cors());
+app.use(cors({
+  origin: 'http://localhost:3000',
+  credentials: true
+}));
 app.use(express.json());
 
-// Health route
-app.get('/api/health', (req: any, res: any) => {
-  console.log('✅ Health check called');
+// Routes
+app.use('/api/auth', authRoutes);
+app.use('/api/shift-templates', shiftTemplateRoutes);
+app.use('/api/shift-plans', shiftPlanRoutes);
+app.use('/api/employees', employeeRoutes); // NEU HINZUGEFÜGT
+
+// Health check
+app.get('/api/health', (req, res) => {
   res.json({ 
     status: 'OK', 
     message: 'Backend läuft!',
@@ -20,55 +33,12 @@ app.get('/api/health', (req: any, res: any) => {
   });
 });
 
-// Simple login without bcrypt
-app.post('/api/auth/login', (req: any, res: any) => {
-  console.log('🔐 Login attempt:', req.body.email);
-  
-  // Einfache Hardcoded Auth (OHNE Passwort-Hashing für Test)
-  if (req.body.email === 'admin@schichtplan.de' && req.body.password === 'admin123') {
-    console.log('✅ Login successful');
-    res.json({
-      user: {
-        id: '1',
-        email: 'admin@schichtplan.de', 
-        name: 'Admin User',
-        role: 'admin',
-        createdAt: new Date().toISOString()
-      },
-      token: 'simple-jwt-token-' + Date.now(),
-      expiresIn: '7d'
-    });
-  } else {
-    console.log('❌ Login failed');
-    res.status(401).json({ error: 'Invalid credentials' });
-  }
-});
-
-// Get shift templates
-app.get('/api/shift-templates', (req: any, res: any) => {
-  console.log('📋 Fetching shift templates');
-  res.json([
-    {
-      id: '1',
-      name: 'Standard Woche',
-      description: 'Standard Schichtplan',
-      isDefault: true,
-      createdBy: '1',
-      createdAt: new Date().toISOString(),
-      shifts: [
-        { id: '1', dayOfWeek: 1, name: 'Vormittag', startTime: '08:00', endTime: '12:00', requiredEmployees: 2 },
-        { id: '2', dayOfWeek: 1, name: 'Nachmittag', startTime: '11:30', endTime: '15:30', requiredEmployees: 2 }
-      ]
-    }
-  ]);
-});
-
 // Start server
-app.listen(PORT, () => {
+app.listen(PORT, async () => {
   console.log('🎉 BACKEND STARTED SUCCESSFULLY!');
   console.log(`📍 Port: ${PORT}`);
   console.log(`📍 Health: http://localhost:${PORT}/api/health`);
-  console.log(`📍 Ready for login!`);
-});
-
-console.log('🚀 Server starting...');
\ No newline at end of file
+  console.log('📊 Employee management ready!');
+  
+  await seedData();
+});
\ No newline at end of file