4. This Act is of public order and any derogating provision of any agreement or decree is absolutely null.
However, an agreement or decree may provide, in respect of a worker, a person performing functions under this Act or a certified association, more favourable provisions for the health, safety and physical or mental well-being of the worker.
1979, c. 63, s. 4; 1999, c. 40, s. 261; 2021, c. 272021, c. 27, s. 23312.