NWH - There is no difference with what business you run the rules of employment are exactly the same. There is no stress either way, providing you set up your Terms of employment properly, my window cleaners and carpet cleaners get paid a percentage of the work they do, my office cleaners get paid on an hourly basis. Simple.
Ronnie - If he has been with the business for less than 12 months, then yes, you can just sack him, providing you give him statutory notice