29 C.F.R. § 785.45 Suggestion systems.
Title 29 - Labor
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.
Title 29: Labor
PART 785—HOURS WORKED
Subpart C—Application of Principles
Adjusting Grievances, Medical Attention, Civic and Charitable Work, and Suggestion Systems
§ 785.45 Suggestion systems.