Putting the legal issue aside, I think there are a lot of advantages to having a live-in. Particularly if both you and your partner work. There will be no issue of the helper being late in the morning and she can get things up and running whilst you get ready in the morning. Also, you're able to make last minute decision to go out in the evening anytime, whether for a quick drink down the local, or a full night out, and there's always someone there other than Sundays. I think a lot of people with live-out helpers tend to have to give longer notice to their helpers and plan things more when they go out. Hong Kong is a highly sociable place so you might find that you want more flexibility particularly in the beginning when you're making new friends. Another factor to take into account is that, if you have a live-in to begin with, you can always ask her to live out if you have to and she won't mind, but the other way round might be harder since a helper might already have become use to having her own place. If you have at least one child and you like to maintain a reasonably "varied" lifestyle, provided that you find the right live-in helper, you will probably end up finding her an indispensable part of the family. I think you will probably need to start living in Hong Kong to appreciate this.