(1) Adjusting grievances. Time spent in adjusting grievances between an employer and employees during the time the employees are required to be on the premises is hours worked, but in the event a bona fide union is involved the counting of such time will, as a matter of enforcement policy, be left to the process of collective bargaining or to the custom or practice under the collective bargaining agreement.
(2) Medical attention. Time spent by an employee in waiting for and receiving medical attention on the premises or at the direction of the employer during the employee's normal working hours on days when he is working constitutes hours worked.
(3) Civic and charitable work. Time spent in work for public or charitable purposes at the employer's request, or under his direction or control, or while the employee is required to be on the premises, is working time. However, time spent voluntarily in such activities outside of the employee's normal working hours is not hours worked.
(4) Suggestion systems. Generally time spent by employees outside of their regular working hours in developing suggestions under a general suggestion system is not working time, but if employees are permitted to work on suggestions during regular working hours the time spent must be counted as hours worked. Where an employee is assigned to work on
the development of a suggestion, the time is considered hours worked.