It depends on the country. In France for instance, it is legal to have two (or more) jobs but they cannot be with competitors, you have a limit of hours you ca

It depends on the country. In France for instance, it is legal to have two (or more) jobs but they cannot be with competitors, you have a limit of hours you can work (which means that if your contract states 40 hours work then you cannot have another one), and you cannot have a clause in your contract which you usually do have (in the companies I know at least - tech oriented).