When discussing the help I have inside the home:
Jenny, our housekeeper; manages all internal domestic duties (full time, exclusive)
Claire, House manager - takes responsibility for external domestic dealings, but as an additional focus of the Mon - Fri care for DD (10) for a few hours each day (full time exclusive)
They both "report" to me, get paid PAYE, and enjoy many other additional benefits e.g. Jenny has a school age son, so works around his hours. She also has 10 weeks holiday a year (2 weeks Easter, 2 weeks Christmas, 6 weeks split over summer and 1/2 terms)
Claire gets to go on paid for educational/self improvement (career) courses, has gym membership and a car.
My DH and I make it clear, we all need to work as a team, and they have a large degree of autonomy. If one area isn't pulling their weight everyone is impacted.
The best factor in our "working" relations, is the total trust (and almost the reliance) we have in each other.
We have all worked together for 5years +