By all means I am on the same side, but I think that tweet is a little bit emotional and exaggerated.
1) 57% less pay? The minimum wage is £16,000 in this country, so that means they were earning and minimum of £32-35,000 which Is very high. I doubt they have been offered minimum wage as well, so they are looking at £40,000+ which is maddness.
2) 36 less days off a year, the minimum allowed is 28 days, so they were getting 64 days a year off, with a salary of minimum £32-£35k (which is actually more like £40,000?) thats 1535 hours a year.... thats stupidly high
3) Forced 6 weeks leave, pretty rubbish to be honest, hopefully that isnt long term
4) +25% productivity, does this mean longer hours? 25% more hours per week is 46.5 hours a week? Or are they just doing 25% more when they are working?
Either way, I reckon the figures in that tweet are a little exaggerated, it doesnt change how they have been treated. Fire and rehire just shouldnt be allowed.