A protected characteristic is a personal attribute that the law shields from discrimination, harassment or victimisation in employment and in the provision of services and public functions. In England, Wales and Scotland, the term is defined in the Equality Act 2010 and covers age, disability, gender reassignment, marriage and civil partnership, pregnancy and maternity, race, religion or belief, sex and sexual orientation. In Northern Ireland, there is no single equality statute; equivalent protection arises under multiple orders and Acts (for example, relating to sex, race, disability, religious belief and political opinion), and “protected characteristic” is used as a convenient umbrella term in practice. In Ireland, the Employment Equality Acts and Equal Status Acts protect “discriminatory grounds” (such as gender, civil status, family status, sexual orientation, religion, age, disability, race, and membership of the Traveller community), which serve a similar function to protected characteristics. Identifying the relevant protected characteristic is central to advising on discrimination claims, drafting policies, conducting equality impact assessments, and defending or bringing proceedings before tribunals and courts across the UK and Ireland.