I think most of EU countries your total tax burden is already 50% of what employer pays. Mostly we don't see that part and only talk about what employer has to

I think most of EU countries your total tax burden is already 50% of what employer pays. Mostly we don't see that part and only talk about what employer has to pay that is less than 50% But even some countries at certain brackets have the only income tax part over 50%. So flat 50% of total tax burden would not be unheard of.