13. Unless expressly forbidden by the provisions of the decree, the clauses of a lease and hire of work shall be valid and lawful, notwithstanding the provisions of the above sections 9, 10, 11 and 12, in so far as they provide, in favour of the employee, a higher monetary remuneration in currency or more extended compensation or benefits than those fixed by the decree.
R. S. 1964, c. 143, s. 13.