She works at home, on her laptop, up to four hours a day.

We request that students be available to work at least 10 to 15 hours per week.

Each worked 5 to 7 hours a day, and for all but 8 or 12 weeks a year.

It is not unusual for the immigrants to work 12 to 14 hours a day, seven days a week.

I work on average 100 to 120 hours a week and frequently deal with fatigue.

Working seven days a week up to eighteen hours a day.

Right now I'm working twelve to fourteen hours a day.

There she lived the life of a young associate attorney, working "12 to 14 hours a day, often seven days a week."

She went to the driving range after shooting 73 on opening day and worked for close to two hours.

The director worked 17 to 18 hours a day, seven days a week, for much of the schedule.