@dreamstarmoon, here are the requirements:

Salary Certificate/Letter from company mentioning about salary and designation.
Passport copy of the family member /members
Copies of applicants education certificate, marriage certificate, and birth certificates of all children. The documents should be approved by the Ministry of Foreign Affairs and the respective country’s embassy in Qatar.
Attach a copy of your electricity bill as address proof.
Submit the application to the Ministry of Foreing Affairs (MOFA)Labor Department on the C Ring Road near American Hospital.