For Endorsement of Saudi Employment visa from Saudi Embassy or Consulate, a candidate must submit the below documents:-
Computerized Passport, CNIC, Overseas Employment Card, Photographs, medical from a Saudi Embassy nominated medical center, certified education diploma / degree from desired office. You must submit all the passports in sequence and NOC of previously if already employed in Saudi Arabia.

Please note that Saudi Arabia Consulate take special notice if your documents or their attestation are found forged.
For Yemen certification/endorsement on the qualification certificate is necessary along with the other visa requirements.
For Dubai, Muscat, Kuwait, no visa endorsement is required. For obtaining employment visa, you must submit passport, and complete visa requirement such as medical, education certificate etc.