61.2. No clause of a collective agreement may(1) give preference to a representative association or a sector-based employers’ association;
(2) infringe on a right of an employee on the basis of discrimination related to his union allegiance;
(3) concern a placement agency, placement or labour referral;
(4) limit the employer’s freedom to request the services of an employee;
(4.1) limit the freedom of an employee to choose how he will offer his services to an employer;
(5) introduce discriminatory provisions towards any employer or any association or group of employees or employers;
(5.1) introduce a provision inconsistent with the commitments of the Government of Québec under an intergovernmental agreement respecting labour mobility;
(5.2) introduce a provision that imposes on the Commission an obligation or a procedure for carrying out an obligation that is not provided by law;
(6) contain any other provision contrary to the law.