A better English sentence would be "This is the contract that your boss requested.""
Or even "This is the contract requested by your boss"
I think "This contract is requested by your boss" should be accepted
that would be "kontrak ini diminta oleh bos kamu"
kontrak ini = this contract
ini kontrak = this is a/the contract
this contract was asked for by your boss
"was requested" or "is being requested" - "is requested" in this case is not gramatically correct in any sense