Arizona Revised Statutes Title 23. Labor § 23-282. Underground mine employees and hoisting engineers; twelve hour day; exceptions; violation; classification

1. In an emergency, where life or property is in imminent danger, the period of labor prescribed in subsection B may be prolonged during the continuance of the emergency.

2. The hours of employment may be changed from one part of the day to another at stated periods, the change not to occur more than once in any two weeks, and the employment may be for more than twelve hours during the day in which the change is made.

3. If the employer has adopted a policy of longer periods of employment based on a collective bargaining agreement between the employer and one or more labor organizations representing one or more affected employees that expressly authorizes longer periods of employment, but in no event longer than twelve hours in any twenty-four hour period, subject to compliance with the terms and conditions for implementing periods of employment in excess of eight hours as set forth in the collective bargaining agreement. For purposes of this paragraph, “affected employees” means all or any group of employees of the employer, regardless of whether or not the employees are members of a labor organization, whose periods of employment are limited pursuant to subsection B of this section.