Canada Occupational Health and Safety Regulations

14.46 (1) If, because of the weight, size, shape, toxicity or other characteristic of materials, goods or things, the manual handling of them may be hazardous to the health or safety of an employee, the employer shall issue instructions that the materials, goods or things shall, if feasible, not be handled manually.

(2) For the purposes of subsection (1), the employer shall take into account the frequency and duration of manual lifting and the distances and terrain over which an object is to be manually lifted or carried in deciding whether the manual handling of the materials, goods or things may be hazardous to the health or safety of an employee.