You can do gasfitting if your employer has a licence. This licence lets your employer say you can do gasfitting work. You are allowed to do the work if your employer says you can. You have enough authority to do the gasfitting work if your employer gives you permission. This means you can do the work or help someone else do it. Your employer's permission is all you need to do the work. There are some rules you must follow, though. These rules are in section 62 and in some regulations. You must follow these rules when you are doing gasfitting work.