This is a real hard one for anyone wanting to get bigger, i came up with the following solution which works for me.... I don't say it would work for everyone though. My guys are on a 20hrs per week guaranteed income with the promise of more hours if its possible to work them. I figure that no matter what the weather does it should always be possible to do 20hrs. Most times they get 35hrs plus. I do get them to do evening collecting for me which they get paid for. plus if they bring in some good work they get a bonus.
They are on an hourly rate with a bonus if they perform well and no complaints come from there work. I am fortunate to have a couple of very good guys, the one is beyond brilliant in the things that he does for the company although he has a vested interest in the fact that he is engaged to my daughter.
PAYE, etc etc is a pain but i use a program called quickbooks to do it all and its not such a chore, Employers liability, public liability, vehicle insurance etc all eats massive amounts of profit but its something you have to live with if you want to get bigger. If i had my time again i would price very high and stay small.
Hope that this is of some help.
Denzle