Employment law in the UK governs the legal relationship between those who work and those who engage them. Its central question is deceptively simple: on what terms, and with what protections, does a person perform work for another? The subject covers everything from how a contract of employment is formed and implied, to the rights that attach to it — including protection from unfair dismissal, discrimination, and wrongful termination.
Four foundational tests and doctrines shape the whole subject. The employment status question — whether someone is an employee, a worker, or an independent contractor — is the gateway issue, determined by tests of mutuality of obligation, control, and personal service established across a line of cases from Ready Mixed Concrete onwards. The band of reasonable responses test governs unfair dismissal, asking not what the tribunal would have done but whether the employer's decision fell within the range open to a reasonable employer. The implied duty of mutual trust and confidence underpins constructive dismissal and modern contract law, while the Equality Act 2010 framework — built around protected characteristics and concepts of direct and indirect discrimination — supplies the architecture for discrimination claims.
Several areas remain genuinely contested and are ripe for exam and practice alike. The boundary between 'worker' and 'employee' has been repeatedly litigated in the gig economy, and the Supreme Court's approach in Uber has not settled every question. Indirect discrimination continues to evolve, particularly around the meaning of 'particular disadvantage' following Essop and Homer. Equally live is the extent to which the implied duty of mutual trust and confidence can be used to supplement or modify express contractual terms — a tension Johnson v Unisys put into sharp relief and which has never been fully resolved.