Canada Occupational Health and Safety Regulations

2.18 (1) No employee shall climb a tower, an antenna or an antenna-supporting structure unless

• (a) the employer has authorized the employee to do so;

• (b) the employee has been trained and instructed in a safe method of climbing; and

• (c) the employer has provided a personal fall-protection system in accordance with Part XII.

(2) No employee shall climb or work on a tower, an antenna or an antenna-supporting structure

• (a) when weather conditions are likely to be hazardous to the health or safety of the employee, except when the work is required to remove a hazard or to rescue an employee; or

• (b) if the physical condition of the tower, antenna or antenna-supporting structure is likely to be hazardous to the health or safety of the employee.