S-2.1, r. 4 - Safety Code for the construction industry
3.5.7. Step-ladder: If the worker uses a step-ladder the employer shall make sure:
(a) that it complies with CAN3-Z11-M81 Portable Ladders, except to the extent that the standard is modified by this subdivision;
(b) that it is not used near an exposed electrical circuit when it is made of metal or is metal-reinforced;
(c) that its legs are fully spread and that the retaining device is locked; and
(d) that the top and the rest are not used as a step.
R.R.Q., 1981, c. S-2.1, r. 6, s. 3.5.7; O.C. 329-94, s. 40.