Hi,
you will lose about 1/3 of your salary in tax unless your employer is declaring your salary as less which many do to avoid paying such high tax for IKA etc. I've been living & working here as a teacher for four years & managed to negotiate 15euros p. h after tax & I get all may IKA contributions paid for (essential as a teacher particularly as you can sign on during the summer after working for two years , receiving about 380 euros a month) Hope this is useful.