I hope I'm understanding your issue. It sounds like the situation is, the company is posting a position based on a bid. If the bid is awarded, then the hire is expected to be made and if the award is not won, then there will be no hire. There are no guidelines regarding this specific situation in the laws and regulations enforced by OFCCP. There is no specific language required for contingent positions. Of course, all of the posting and advertising rules still apply.