Iowa Admin. Code r. 875-219.8
Domestic service employees who reside in the household where they are employed are entitled to the same minimum wage as domestic service employees who work by the day. In determining the number of hours worked by a live-in worker, the employee and the employer may exclude, by agreement between themselves, the amount of sleeping time, mealtime and other periods of complete freedom from all duties when the employee may either leave the premises or stay on the premises for purely personal pursuits. For periods of free time (other than those relating to meals and sleeping) to be excluded from hours worked, the periods must be of sufficient duration to enable the employee to make effective use of the time. If the sleeping time, meal periods or other periods of free time are interrupted by a call to duty, the interruption must be counted as hours worked.
Iowa Admin. Code r. 875-219.8