The FLSA explicity provides that domestics (nanny, housekeeper, maid, etc.) are household employees, are considered non-exempt (hourly workers) and are entitled to minimum wage and (for live out employees) overtime compensation. There is a limited exemption for live in companionship services provided to the elderly and infirm.
HomeWork Solutions Inc. has a more detailed description of the FLSA coverages in it's article Nanny: Employee or Independent Contractor?
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