Around 1,500 Tata steelworkers based in Port Talbot and Newport Llanwen in South Wales will begin a continuous overtime ban and “work to rule” – meaning refusing to do work that is optional in their contracts. It is the first time in 40 years that there has been industrial action in the UK steel industry. Unite union said the industrial action will severely disrupt and delay Tata’s operations and order book. Tata Steel says the industrial action was “unlawful” and it had given workers “generous” redundancy packages. Members of Unite held a rally on Monday evening outside the entrance in Port T…