These Regulations are made in exercise of the powers conferred by section 8(1) of, and Schedule 7 to the European Union (Withdrawal) Act 2018 (c. 16) in order to address failures of retained European Union (EU) law to operate effectively and other deficiencies (in particular under paragraphs(a), (d), (e) and (g) of section 8(2) of that Act) arising from the withdrawal of the United Kingdom (UK) from the EU. The powers in section 2(2) of the European Communities Act 1972 are relied upon to make amendments to correct existing technical inaccuracies in the current legislation (these amendments are made by paragraph 9, 11(c) and 16(c) of Schedule 1).
Link: The Employment Rights (Amendment) (EU Exit) Regulations 2019
Source: Legislation .gov.uk