An employer is required to pay an employee for being called back to work after the employee's normal working hours, otherwise known as callback pay, for the hours actually worked and, perhaps, additional hours depending on state law.

In addition, an employer may or may not be required to pay an employee if the employee reports to work and is then dismissed because no work is available or because there is an unusual condition at the workplace that prevents the employee from being able to work. This is otherwise known as report-in pay.