As nkrisc already pointed out, just because you put something in a contract it doesn't mean it's enforceable, or lawful. See, if it's not lawful in the first p

As nkrisc already pointed out, just because you put something in a contract it doesn't mean it's enforceable, or lawful. See, if it's not lawful in the first place, you can't "breach" it. IANAL, but I had enough law during my studies to know where this will lead. Maybe you can do these kind of shenanigans in the US of A, but I'm confident this kind of contract clauses are not possible in Europe.