The Law Bod has titles which try to keep pace with developments.
One such is Blackstone's statutes on employment law - this title is at KN192.BLA
But remember to check in case there has been subsequent amendments or more recent legislation.
Legislation - whether it be in the form of act of Parliament or statutory instrument - has, since the late (20th, become the dominant source of English labour law.
Holders of an Oxford SSO must always use a subscription database to be sure of finding the current (amended/consolidated) text of UK legislation.
General Public Acts and Measures : Classmark: Cw UK 10
This is the official printed copy of statutes as originally promulgated. These are arranged by year and are not amended.
Halsbury's Statutes : Classmark: Cw UK 30H196a
Multi - volume work arranged by broad subject area. Has statutes as amended and annotated with a looseleaf updating service.
Current Law Statutes annotated : Classmark: CW UK 020 C976
From 1947 onwards. Arranged by year. Contains statutes as originally enacted with annotations.
Halsbury's Statutory Instruments: Classmark: Cw UK 090 S797.4b
Arranged by broad subject these have summaries of statutory intruments with some major instruments being reprinted in full.