So you ask who they are before you tip? At a bar I just hand them the money, tip included, and walk away. I have heard of some owners who take their tips and split them between the other employees. Nice idea. Back to the original question: If you want "extras" tipping is recommended. A friend of mine did massage from his home and if people wanted extras he expected extra. If they didn't give extra the next visit they wouldn't get extra. PS If they are really into you and want to give the extras away, expecting nothing, most likely they will tell you you can come back at a lesser fee.