I once worked for an outfit where we had more than the legal minimum days off per month. The normal days off allocation was not in any contract, it was just the accepted norm. Guess what, when demand became greater than supply the normal days off were reduced to legal minimum. No contract, no union. The further insult was when our 4 day stop over in Africa became 2 'duty/rest days' & 2 days off. Usually, after a weeks duty away from home we'd have 3-4 days off back home to transition back to European flying. As there was no jet lag involved we found ourselves back on roster after 2 days back home. Lots of grumbling, but nothing to be done. Morale was in the toilet. Wedges often have thin ends. Beware.