This nugget has been doing the rounds for several years. It's not correct. The legislation was not intended to throw current seniority systems into disarray. This has been admitted. Besides- it is going to take people taking this to Court, and eventually the European Court, at enormous expense. Who is going to pay? The Unions? No- not with many of their members happy with promotion based on seniority. People have been saying for years seniority based concessions and promotion will have to end. It's not happening and it's not going to. You will not see it in your lifetime. This rumour/gossip is being endlessly recirculated.