This is from the EU summary of the deal made with Greece:
On labour markets [Greece must] undertake rigorous reviews and modernisation of collective bargaining, industrial action and, in line with the relevant EU directive and best practice, collective dismissals, along the timetable and the approach agreed with the Institutions. On the basis of these reviews, labour market policies should be aligned with international and European best practices, and should not involve a return to past policy settings which are not compatible with the goals of promoting sustainable and inclusive growth
Best practices? I think we should read that as toughest restrictions.
This is, no doubt, the EU getting in the right to beat protest before it happens.