Hi dude,
this guy sounds like he is a real dinosaur, well out of touch. The ultimate responsibility should lie with your employer to provide you with a full induction, contract and terms of employment, and as the guys have mentioned, he should also be paying NI contributions for you or declaring how much he is paying out in casual labour to the IR, not to mention being adequately insured. Get yourself some good advice from the CAB or an employment lawer, give him a letter and he will go away.
If he doesn't then call the Z- team, Badass zx10rmark will sort it, quote.............................................................................
'Well i say FUCK the law if a chav broke into my house or my garage me being an ex soldier i have lots of buckshee equipment kicking around i would tie the bastards up stick them in the back of the pick up and off to the moors i'd go there are some very deep peat bogs on the moors to drop the little bastards in once ive kicked the living shit out of them. no body no crime.'