On 17 January Theresa May set out a 12 point Brexit plan to an audience that included European Ambassadors. The speech included the Prime Minister's principles for the UK. Under the third principle, that of building "a fairer Britain" the PM confirmed her intention that the existing EU law protections for workers will be "protected and maintained".
The PM also indicated that it was her intention to build on these rights. While she did not go into any detail the PM did make specific reference to ensuring that "the voices of workers are heard by the boards of publicly listed companies for the first time". As part of her Tory leadership campaign Theresa May had pledged to install worker representation on company boards. However in a speech to the CBI in November 2016 she confirmed that did not mean the direct appointment of workers to boards.
Following the Supreme Court ruling (by an 8 to 3 majority) on 24 January that a parliamentary vote must be given on triggering Article 50, parliament have since voted to trigger Article 50 and the UK Government have confirmed that they intend for this to happen by the end of March 2017. However, while Brexit is coming, it does seem that existing employment rights are likely to be around for the foreseeable future.