21. The Corporation shall not, without obtaining the prior authorization of the Government,(1) exercise its powers in respect of property other than the Place des Arts de Montréal;
(2) acquire, alienate, hypothecate or take a lease on an immoveable;
(3) enter into a concontractor more than three years, except a contract for less than five years in which the Corporation is the lessor;
(4) contract a loan that increases the aggregate of sums borrowed by the Corporation and outstanding above the amount determined by the Government;
(5) exercise a mandate pertaining to the negotiation of a collective labour agreement with its employees;
(6) sign a collective labour agreement with its employees.