Which country's employment rules have tripped you up when hiring?

I'm a recruiter, and I keep collecting stories like these: a 6-month probation shipped in a Polish offer (illegal), the 8% holiday allowance forgotten in a Dutch one, notice periods copy-pasted between countries.

I'm turning the most common mistakes into free hiring guides, 10 countries covered so far. Which country's rules confused you the most? I'll prioritise the next guides based on the answers. 🙂