Set the boundary before the friction, not after
The best time to agree on privacy, personal time and shared items is during the first week, while both sides are still being deliberate about how things work. Waiting until a specific incident forces the conversation (a room entered without knocking, a phone borrowed without asking) makes the same rule feel like a rebuke rather than a normal part of settling in.
A short conversation covering the four areas above, held calmly and early, does more to prevent conflict than any amount of correction after the fact. If a boundary needs adjusting later, that's normal; revisit it directly rather than letting a small irritation go unspoken for weeks.
- Decide which rooms and hours are hers alone.
- Set a clear end to the working day, even if she lives in.
- List which household items she may use without asking.
- Agree on how you'll address each other, and stick to it.
Personal time inside a live-in arrangement
A live-in helper sleeping under your roof is not automatically available whenever a need arises outside her working hours. Decide together what her working day actually covers, when it ends, and what counts as an emergency worth an exception versus something that can wait until morning.
Respecting personal time also means not treating her days off as flexible around your convenience. Once a rest day or a break is scheduled, moving it should be the exception you ask about, not something that quietly happens by default.
Belongings, privacy and how you speak to each other
Set out clearly which household items are shared without asking (kitchen equipment for meal prep, say) and which need permission first (a personal appliance, the car, anything belonging to another family member). Being specific here removes the daily guesswork that otherwise breeds small resentments on both sides.
How you address her matters as much as what you ask her to do. Find out what she'd like to be called, use it consistently, and keep requests phrased as requests rather than commands. That tone, held steadily, does more for a working relationship than a formal boundary document ever will on its own.