Yes, but beware that in Europe, even if your contract tells you that you are self employed, when you fly for only one airline, have an ID badge from that airline, get roster and vacation from that airline, you are an employee, and not a contractor. it is called false self employment and is ALWAYS the responsibility of the employER. the illegal contract is also ALWAYS the responsibility of the employER according to the European Work Legislation, which supercedes any local law by the way.