Setting up your Google Apps for Work account on your Android device is easy, just follow these steps
Tap on settings
Under General, tap on Accounts
Tap Add Account
Select Google from the list
Tap 'Existing' at the prompt
Enter your Google Apps email address and password and tap to continue
Allow several minutes for the account to authenticate. Once finished, choose which options you'd like to sync
That's it! You've successfully added your Google Apps for Work account to your Android device