Except for contracts for educational and vocational counseling, the contracting office may renew contracts from year to year by completing a renewal agreement no later than 30 days before the expiration of the contract. There must be no change in the schedule of provisions in the original contract.

(a) Supplements may be negotiated at any time during the contract period upon the completion of the supplemental agreement.

(b) Contracts for educational and vocational counseling may provide for automatic extension from year to year.