124(1)An employer shall ensure that a portable ladder complies with and is used in accordance with either of the following standards:
(a)
CSA standard Z11-12 (R2017), Portable ladders or a standard offering equivalent or better protection; or
(b)
ANSI standard ANSI ASC A-14.7-2011, Safety Requirements for Mobile Ladder Stands and Mobile Ladder Stand Platforms or a standard offering equivalent or better protection.
124(2)An employer shall ensure that a portable extension ladder
(a)
has no more than three sections,
(b)
has locks that securely hold the sections of the ladder in an extended position, and
(c)
when extended, maintains a minimum overlap as follows:
(i)
where the ladder is 11 m or less, the overlap shall be 1 m;
(ii)
where the ladder exceeds 11 m and is 15 m or less, the overlap shall be 1.25 m; and
(iii)
where the ladder exceeds 15 m and is 22 m or less, the overlap shall be 1.5 m.
124(3)An employee working 3 m or more above the ground or floor level on a portable ladder may work without a fall-protection system if
(a)
the work is a light duty task of short duration at each location,
(b)
the employee’s centre of gravity is maintained between the two ladder side rails,
(c)
the employee will generally have one hand available to hold on to the ladder or another support, and
(d)
the ladder is not positioned near an edge or floor opening that would significantly increase the potential fall distance.