Final answer:
Mary's after-hours work on her company laptop responding to emails is an example of Overtime because she is working beyond her standard 40-hour workweek.
Step-by-step explanation:
After working a regular 40-hour workweek in the office, Mary takes her company laptop home and generally spends an hour or two responding to work e-mails. This scenario is an example of Overtime. Overtime refers to any hours worked beyond the standard workweek, typically beyond 40 hours in many places, for which employees may receive additional compensation or time off. While the other options like Telecommuting and Remote work refer to working from a location outside the employer's premises, usually from home, and Flextime refers to having flexible work hours, these are not the primary work mode described in the question. Job sharing is a situation where two or more employees share a single full-time job. In Mary's case, responding to emails after regular work hours qualifies as additional work beyond her normal duties, thus considered overtime.