My friend works for a company that is regularly asking for 50 hours of work a week from her.  She recently had to take the day off due to illness, and the manager made a statement making it sound as if he expected her to use some of her very limited sick days for the day off.  However, due to the 10 hour days she has already worked 40 hours in the week.

She is salaried, and was told occasional overtime may be required, but it wasn't until the company fired many of her coworkers that they started trying to push her to do 10 hour days.

I believe that legally they can't force her to use sick leave since she has met the 40 hours minimum required as a salaried employee.  Is this correct?

She lives in Atlanta, Georgia