Subject to regulation 61, the Minister may enter into a collective agreement in the Safety and Security Sectoral Bargaining Council on any matter that has financial implications only if—

(a)        he or she has a realistic calculation of the costs involved in both the current and the subsequent fiscal year;

(b)        the agreement does not conflict with the Treasury Regulations; and

(c)        he or she can cover the cost—

(i)        from his or her departmental budget;

(ii)        on the basis of a written commitment from the Treasury to provide additional funds; or

(iii)        from the budgets of other departments or agencies with their written agreement and Treasury approval.