Pg. 5: Working hours are not excessive - Manufacturers and suppliers shall adjust the length of the working day to the provisions of the applicable laws or of the collective bargain agreement applicable for the sector in question, if the latter affords greater protection for the workers. Manufacturers and suppliers shall not require their employees to work, as a rule of thumb, in excess of 48 hours a week and workers shall be granted at least one day off for every 7 calendar day period on average. Overtime shall be voluntary, shall not exceed 12 hours per week, shall not be demanded on a regular basis and shall always be compensated at a premium rate, pursuant to the provisions of the prevailing regulations in force