(a) The equal opportunity clause prescribed by the Commissioner pursuant to the regulations of the Secretary of Labor (41 CFR chapter 60) shall be included in each nonexempt contract and subcontract for work receiving FHA assistance.

(b) Subcontracts less than $50,000 may incorporate by reference the equal opportunity clause.

(c) The equal opportunity clause shall be deemed to be a part of each nonexempt contract or subcontract whether or not it is physically incorporated in such contract.