The reference to Lord Mansfield`s ex turpi causa describes the standard of illegality that must be upholded in order to maintain a right to the illegality of public order. Even if a contract is likely to be legally fulfilled, if the agreed goal is to do something illegal, ignorance of illegality does not exempt it from illegality. The contract for insurance or banking services entered into by the unauthorized insurance company is usually out of order. A provision of a contract that is illegal can contaminate the entire treaty. The underlying purpose of this law, prohibited conduct, is assessed to determine exactly what was illegal. The more serious or deliberate the illegality, the harsher the likely approach a court is to deny recourse. Criminal courts are there to punish criminal behaviour in the name of society: fines and penalties are imposed in the name of society. In employment contracts, knowledge of the facts and the worker`s participation in illegality are minimum conditions for the worker to be deprived of his or her labour rights. This is the principle of public order; ex dolo malo non oritur actio.
No court will help a man who bases his base on an immoral or illegal act. If, on its own initiative or otherwise, the ex turpi causa remedy or violation of a positive law of that country appears to occur, the court shall declare that it is not entitled to assistance. In contrast, non-enforceable contracts are agreements for which the contract is considered (by law) to have existed, but no recourse is granted. . . .