You don't have to speculate, there have been several cases where the Prudhommes re-qualified contractors as full-time employees. It usually takes 1) a well-organized union in company Y to help with the legal process, round up candidates, etc. and 2) an actual desire from the contractors to be hired by company Y. (Just mentioning 2 because some contractors I know, who've been posted to the same company for a long time, wouldn't dream of working there as an FTE).
I've been (remotely) involved in such a mass (about a dozen FTE) requalification 10 years ago. Needless to say, the rules for contract duration and conditions were strongly tightened up afterwards.
I've been (remotely) involved in such a mass (about a dozen FTE) requalification 10 years ago. Needless to say, the rules for contract duration and conditions were strongly tightened up afterwards.