In Belgium the badge-in and badge-out times are proof of how many hours you have worked (enough/not enough) according to Belgian legislation (and monitored by BKK). For some employees it records "hours in the building", which is sometimes something quite different of course.
There is a clear distinction between OTS-personnel (no university degree and mostly only older women). Nowadays a bachelor degree can count as MPT-classification but this was not the case back in the day - promotions from OTS to MPT were rare (mostly reserved for men).
OTS must by law declare overtime and get it approved by the SPV when exceeding a number of hours (per day). Same law applies to MPT (= all employees except higher management) but EM has a different interpretation of that law and gets away with it!
If an OTS works more than the max amount of 11 hours in a day, the supervisor gets a reprimand email from HR to remind the OTS of the rules. You can imagine that supervisors prefer no OTS in their group because of the restrictions, which are bypassed for MPT. An OTS regularly works (only) MPT jobs but does not get the salary or other benefits, the OTS is under higher pressure because needs to finish the (MPT) work within the hours set by law; lunch break must be recorded as unpaid time even if that break was used to work). OTS cannot save days into a very advantageous pension plan which is reserved to MPT, OTS cannot put in voluntary extra hours to meet a project deadline, OTS cannot travel outside business hours, the list goes on ...
Any other country where this discrimination exists? BTW: OTS are since years the "first" because cheaper group of people to let go.