The actual text of the Constitution is the final and absolute yardstick all laws are measured against. When the Supreme Court considers the constitutionality of any law it must measure the law against the original text of the constitution and its plain meaning when it was written.
Notice of working hours/changes. Your employer must give you reasonable notice of any changes to your working hours, such as cancelling your shifts. They may request last minute changes (such as ringing you that morning to say that they do not require you to work) and you can choose to agree to this change.
The FLSA uses the work week as the standard for computing overtime pay due, and each work week stands alone. Thus, a nonexempt employee's time worked vests at the end of each work week (or work period). Work time may not be averaged from work week to work week.or employees who work shifts of 24 hours or more, the FLSA permits a sleep time exclusion of up to 8 hours, if there is an agreement with the employees about this and adequate sleeping facilities are provided.