Ladders shall be used for access only.By way of exception, ladders may be used as work platforms for work at height when the use of other and more secure work equipment is inexpedient because the risk is low and
a.the ladder will only be used for a short time, or
b.the employer cannot change the conditions in the workplace.
Free-standing ladders more than 6 metres high shall not be used. Free-standing combination ladders more than 4 metres high shall not be used.