mirifly.... there are no contract workers with Airlines in Belgium at all well..there are still pilots on a contract ,which of course is called Arbeidsovereenkomst voor Uitzendarbeid, and they are supplied by an employement agency based on a contract with the Airline. You may of course call this not a contract because you will call it an Overeenkomst and the Airline you will call Gebruiker and the pilot is a Werknemer.... .It all does not change the fact that some of these contracts still exist.
Almost forgot...the pilots serving these contracts have no reason at all to read and understand the Staatsblaad as they are employed with the contract agency, not the airline.