It's not a promise when it's written in your contract. But – in contrast to the US I guess – in the EU breaching this contract as am employer _will_ cost you d

It's not a promise when it's written in your contract. But – in contrast to the US I guess – in the EU breaching this contract as am employer _will_ cost you dearly; there are even courts dedicated for employment disputes in some countries, resulting in timely rulings.