Honestly, not sure ¯\_(ツ)_/¯ One of the reasons I wanted to remain in the EU was because of things like people-friendly labour laws - I trust the EU far more than I trust the government (regardless which party is in power).
AFAIK we are basically keeping everything from the EU at the time of severance, and I think the Brexit trade deal means we can't make any significant degredation of labour laws going forward. If anyone reading this knows different, please do correct me.
Though you're not really under EU law anymore, has the UK resolved these sorts of issues, i.e., EU law will apply unless/until changed by Parliament?