Canada Occupational Health and Safety Regulations

14.34 (1) If motorized or manual materials handling equipment is travelling with a raised or suspended load, its operator shall ensure that the load is carried as close as possible to the ground or floor and shall not in any case transport the load at or beyond the point at which the loaded equipment becomes unstable.

(2) Any load, other than bulk materials, that would likely slide on or fall from motorized or manual materials handling equipment resulting in a hazardous condition shall be secured to prevent such movement.