The laws you are looking for are contained withing the vast regulations of the Fair Labor Standards Act
of 1938. Consequently, this clearly is not a new law.
The employer may make a change in what they will allow at any time in terms of how your time may be apportioned during the work week. However, if a policy change of the employer is made which effects your wagers, then they may NOT apply the change retroactively.
This is NOT a new law, and it is NOT mandatory----it is only permissive. Under the law though, while you may have to work only a minimum of 32 hours a week, even if you work those 32 hours in the first 2 days of the work week, you may not simply take the remainder of the time off. The employer may mandate that you work a given number of days in the week as well. Your employer has chosen 5 days, but they could just as well have chosen 7 days and that would be lawful as well.
Under the law, even if the exempt employee only works 5 minutes, they are entitled to their full salary for the day. The employer may use sick, vacation or personal time to make up the difference in the hours that day, but the employee must be paid their full salary for the day.
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