During what time frame may the first shift and third shift overlap?

The overlap between the first shift and the third shift typically occurs during the transition periods of the work schedule to ensure coverage and a smooth handover of responsibilities. In many workplaces, the first shift often starts in the morning and the third shift begins in the evening or at night.

In the scenario presented, option B, which states the overlap occurs from 7 am to 8 am, is appropriate because it allows the first shift, which generally starts earlier in the morning, to still have personnel present that can brief or transition duties with the third shift workers who may be coming in early for their evening work. A one-hour overlap at this time is a common practice to maximize productivity while maintaining continuity in operations.

The other time frames typically do not serve the purpose of covering an adequate overlap period. Early morning shifts often do not allow for transitions at the very beginning or very end of standard working hours for either shift. Thus, the selected time range successfully addresses the need for coordination between these shifts.