It has nothing to do with the size of the company. BA is much bigger and many have gone to law with successful results against them over the years. It has everything to do with the structure of the company quite deliberately designed to deny workers their rights. Look at the previous posts... "sign this statement to say you will not take legal recourse or no re-employment."
Netjets Europe has been an employment scam from day one. It still is. Quite honestly I am astounded that all these EU countries allow this psudo employment model to continue.