15. All work stations shall be checked at least once per shift.
Where raising work is done by means of a climber, at least 2 checks shall be done every 5 shifts.
When a worker is alone at his work station, the employer shall communicate with him at least every 2 hours unless that worker may be seen.
O.C. 213-93, s. 15; O.C. 1326-95, s. 6.