29 U.S.C. § 1814

(1)

Unless earlier suspended or revoked, a certificate shall expire twelve months from the date of issuance, except that (A) certificates issued under this chapter during the period beginning December 1, 1982 , and ending November 30, 1983 , may be issued for a period of up to twenty-four months for the purpose of an orderly transition to registration under this chapter, (B) a certificate may be temporarily extended by the filing of an application with the Secretary at least thirty days prior to its expiration date, and (C) the Secretary may renew a certificate for additional twelve-month periods or for periods in excess of twelve months but not in excess of twenty-four months.

(2)

Eligibility for renewals for periods of more than twelve months shall be limited to farm labor contractors who have not been cited for a violation of this chapter, or any regulation under this chapter, or the Farm Labor Contractor Registration Act of 1963 [ 7 U.S.C. 2041 et seq.], or any regulation under such Act, during the preceding five years.