S-2.1, r. 14 - Regulation respecting occupational health and safety in mines

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11.2. As of 1 January 2018, every person underground must wear Class 3 apparel that meets CSA Standard Z96-09, High-Visibility Safety Apparel, or apparel whose juxtaposed fluorescent and retroreflective stripes or bands having a total width of not less than 100 mm are compliant with the stripes and bands provided for in that standard for Class 3 apparel.
As of 1 January 2018, every person on the surface of an underground mine must wear Class 2 or 3 apparel meeting CSA Standard Z96-09, High-Visibility Safety Apparel, or apparel whose juxtaposed fluorescent and retroreflective stripes or bands having a total width of not less than 100 mm are compliant with the stripes and bands provided for in that standard for Class 2 or 3 apparel.
The wearing of high-visibility safety apparel is not required in a lunchroom, a cab, an office or a refuge station, or to move at the surface of a mine in a lane reserved for pedestrians for access or regress from the work site at the beginning or the end of a work shift.
O.C. 755-2017, s. 2.