On Johnson’s deal with respect to workers rights, the current withdrawal agreement unlike previous one’s makes no commitment to maintain those rights, i.e. those commitments have been removed. The TUC opposes the agreement, particularly on Worker’s Rights but also on its general crapness.
The current fear from some, is that Johnson will get his deal approved by parliament, thus negating/satisfying the Benn Act and then fail to bring the implementation legislation, written but secret, as are the legal text and impact analyses to Parliament and thus crash out on 31st with no deal. Much of the social protection legislation is implemented by SI and would be jeopardised by this manoeuvre i.e. the Law that mandates these rights is EU law.
Lexiters should also note that the withdrawal agreement maintains the state aid restrictions and there will be no Article 50 escape clause. Even Costas Lapavitsas is pointing at these flaws. Any agreement will be a treaty which to exit, would be under WTO treaty terms or the Treaty of Vienna. So much for bringing back control and freeing the country to pursue a socialist programme.