3.03. When the employer operates more than 1 shift and the standard workweek is 5 days, the regular workday begins at the following hours:(1) the first shift, between 7 :00 a.m. and 9 :00 a.m.;
(2) the second shift, between 3 :00 p.m. and 6 :00 p.m.;
(3) the third shift, between 11 :00 p.m. and 1 :00 a.m.
Where the duration of the standard workweek in force is 4 days, the beginning and the end of the regular workday for shifts must be scheduled within a period of 24 hours, beginning with the hour at which the first shift begins its workday.
R.R.Q., 1981, c. D-2, r. 35, s. 3.03; O.C. 494-99, s. 2.