What does the leave vote mean for HR?

The CIPD have reported that:

Holidays/Working time: Opt Outs – The UK’s statutory paid holidays (5.6 weeks) go beyond the EU minimum (20 days) and are unlikely to be repealed, but the government may wish to amend the rules on calculating holiday pay and on opting out of the 48-week.
Equality: compensation cap – We may see a cap put on discrimination compensation but many equality laws (for example, those on sex, race and disability, and on equal pay) predate the UK joining the EU and are unlikely to be repealed.
Atypical workers: employment rights – Protection for agency, part-time, and fixed-term workers derives from the EU, and the UK may wish to trim back the existing rules.
Transfer of undertakings (Tupe) – The UK’s transfer regulations exceed the requirements of the EU directive by including ‘service provision changes’. The block on harmonising terms and conditions following a Tupe transfer (which originates in EU case law) may come under scrutiny.
Data protection: new rules – The EU General Data Protection Regulations 2016 have to be implemented in the UK by May 2018. Even if withdrawal is complete by that time, the UK will still need to comply with cross-border data protection laws if it wishes to keep its EU trading partners.