You have some obligations under Davis Bacon & Related Acts legislation, you must pay no less than the wage and benefit rates listed on the Davis-Bacon wage decision for the lowest specialized trade that is most like the trade in question.  For example, if you are a carpentry contractor and cannot find carpenters listed on the wage decision, you must find a different specialized trade (like plumbing) and you cannot pay less than the prevailing wage for that trade.  Once you do receive the special determination, if you paid lower than what was decided upon, you must correct your payroll accordingly.