Anti-discrimination laws (also known as non-discrimination laws) are designed to prevent discrimination against particular groups of people; these groups are often referred to as protected groups or protected classes.
Although prohibited types of discrimination and protected groups vary by jurisdiction, such legislation usually aims to prevent discrimination in employment, housing, education, and other areas of social life, such as public accommodations. Anti-discrimination law may protect groups based on sex, age, race, ethnicity, nationality, disability, mental illness or ability, sexual orientation, gender, gender identity/expression, sex characteristics, religion, creed, or individual political opinions.
Anti-discrimination laws are rooted in principles of equality, specifically, that individuals are designed not to be treated differently due to the characteristics outlined above. At the same time, they have often been criticised as violations of the inherent right of free association. Anti-discrimination laws are designed to protect against both individual discrimination (committed by individuals) and from structural discrimination (arising from policies or procedures that disadvantage certain groups). Courts may take into account both discriminatory intent, disparate treatment and disparate impact in determining whether a particular action or policy constitutes discrimination.
International law Equality has been described as the foundational principle of international human rights law. Promoting equality and combating discrimination has been described as a one of the main objectives of the United Nations, and non-discrimination is one of two rights mentioned in the UN Charter. Since the UN's founding, various UN committees has been tasked with reducing discrimination on various grounds, including sex, race, language, nationality, and religion.
The Universal Declaration of Human Rights proclaim that everyone is entitled to the rights it mentions "without distinction of any kind" and expressly provides equality before the law, the right to marry and divorce, and equal compensation for labor without distinction based on certain protected characteristics. While the declaration is not binding, nations make a commitment to uphold those rights through the ratification of international human rights treaties.
In addition to the Universal Declaration of Human Rights, other human rights treaties include non-discrimination rights in specific social settings or for specific groups.
Definition of discrimination Human rights treaties define discrimination differently.
The International Covenant on Civil and Political Rights (ICCPR) does not define discrimination. The UN Human Rights Committee has create its own definition, drawing on the definitions in Convention on the Elimination of All Forms of Discrimination Against Women (CEDAW) and the International Convention on the Elimination of All Forms of Racial Discrimination (ICERD). Discrimination is defined as "distinction, exclusion, restriction or preference" on any ground or status that can impair a person's enjoyment of freedoms on "equal footing". Enjoying rights on equal footing does not imply identical treatment every time.
The International Covenant on Economic, Social and Cultural Rights (ICESCR) explicitly defines discrimination as differential treatment based on certain grounds, including harassment and incitement to discriminate. The discrimination could be direct, where there is intention to discriminate, or indirect, where the treatment appears neutral on the outset but has disproportionate impact on a protected group.
History of anti-discrimination legislation
Australia
The Racial Discrimination Act 1975 was the first major anti-discrimination legislation passed in Australia, aimed at prohibiting discrimination based on race, ethnicity, or national origin. Jurisdictions within Australia moved shortly after to prohibit discrimination on the basis of sex, through acts including the Equal Opportunity Act 1977 and the Anti-Discrimination Act 1977. The Australian parliament expanded these protections with the Sex Discrimination Act 1984 (SDA) to cover all Australians and provide protections based on sex, relationship status, and pregnancy. Additionally, the SDA has been expanded to include gender identity and intersex status as protected groups. Discrimination based on disability status is also prohibited by the Disability Discrimination Act 1992.
Belgium
The first Belgian anti-discrimination law of 25 February 2003 was annulled by the Belgian Constitutional Court. The Court ruled that the law was discriminative since its scope did not include discrimination on the basis of a political opinion or language and thus violated the articles 10-11 of the Belgian Constitution, instituting the principle of equality before law.Belgian Constitutional Court 6th of October 2004, nr. 157/2004.
A new law came into force on the 9th of June 2007.Law to combat some forms of discrimination, 10 May 2007. This law prohibits any use of direct or indirect discrimination on the basis of age, sexual preference, marital status, birth, wealth, religion or belief, political or syndical opinion, language, current or future state of health, disability, physical or genetical property or social origin.Article 4, 4° Law of 10 May 2007.
Philippines The Philippines has a long history of establishing laws to protect individuals from discrimination and ensure equality before the law. The Labor Code of the Philippines (Presidential Decree No. 442, 1974) enforces equality in the workplace, prohibiting discrimination based on sex, race, or creed (Article 3). Gender-based wage discrimination is also prohibited (Article 133), ensuring men and women receive equal pay for work of equal value. The 1987 Philippine Constitution provides the foundational framework, guaranteeing that all persons shall have the right to equal protection of the laws (Article III, Section 1). Subsequent legislation has addressed discrimination on the basis of gender, age, disability, mental health, social status, and sexual orientation.
One of the earliest comprehensive anti-discrimination laws was the Magna Carta for Persons with Disability (Republic Act No. 7277), enacted in 1992. This law safeguards persons with disabilities from unfair treatment, particularly in employment, education, transportation, health, and access to public services. It mandates the removal of barriers and the provision of equal opportunities for full participation in society. The Anti-Sexual Harassment Act of 1995 (Republic Act 7877) considers it discriminatory when a sexual favor is required as a condition for hiring, continued employment, promotion, or receiving benefits (Section 3). Employees who refuse such demands cannot be unfairly treated, deprived of opportunities, or subjected to adverse employment actions. In 2000, the Solo Parents' Welfare Act (Republic Act 8972) was enacted in 2000. It safeguards solo parents from employment discrimination (Section 7).
The Magna Carta of Women (Republic Act 9710), enacted in 2009, explicitly prohibits discrimination against women in all forms (Section 2). It provides women with equal access to education, employment, political participation, healthcare, and social services. In 2016, the Anti-Age Discrimination in Employment Act (Republic Act 10911) was enacted to protect workers from workplace prejudice based on age. It prohibits employers from imposing age-based hiring restrictions or terminating employees solely due to age (Section 5). The Mental Health Act (Republic Act 11036), enacted in 2018, protects individuals with mental health conditions from stigma and discrimination (Section 2). It guarantees access to mental health services and encourages the full social and occupational participation of affected persons. The Safe Spaces Act (Republic Act 11313), enacted in 2019, protects individuals from gender-based harassment in workplaces, educational institutions, public spaces, and online. It prohibits discrimination, harassment, and offensive remarks based on sex, gender, sexual orientation, or gender identity, including sexist and homophobic remarks. Based on the Implementing Rules and Regulations of Republic Act 11313, sexist remarks or slurs are statements that reflect prejudice, stereotyping, or discrimination based on sex, typically targeting women.
The SOGIESC (Sexual Orientation, Gender Identity, Gender Expression, and Sex Characteristics) Equality Act, also known as SOGIE Equality Bill, is a pending legislation designed to explicitly prohibit discrimination against LGBTQIA+ persons. The proposed law aims to prevent marginalization, harassment, and unequal treatment in employment, education, health services, and public accommodations. Its passage would strengthen legal protections for sexual and gender minorities, aligning national law with the constitutional guarantee of equality. The first version of SOGIE Equality Bill was filed in 2000, introduced by Miriam Defensor‑Santiago (Senate) and Etta Rosales (House) during the 11th Philippine Congress. As of 2025, the SOGIE Equality Bill remains unpassed, with the last recorded major procedural move on March 19, 2024, when the House committees on Women and Gender Equality and Appropriations submitted Committee Report No. 1035 recommending the bill as a substitute for multiple House bills.
European Union
The European Union has passed several major anti-discrimination directives, the Racial Equality Directive and the Employment Equality Directive, and the Equal Treatment Directive. These directives set standards for all member countries of the European Union to meet; however each member state is responsible for creating specific legislation to achieve those goals. The Court of Justice of the European Union interprets the European Union anti-discrimination law as substantive equality with equality of outcome for subgroups.
All EU member states are also member states to the European Convention on Human Rights. Thus, article 14 of the Convention applies, which concerns a prohibition on discrimination on the ground of sex, race, colour, language, religion, political or other opinion, national or social origin, association with a national minority, property, birth or other status.
United Kingdom
Laws forbidding discrimination in housing, public facilities and employment were first introduced in the 1960s covering race and ethnicity under the Race Relations Act 1965 and the Race Relations Act 1968.
In the 1970s, anti-discrimination law was significantly expanded. The Equal Pay Act 1970 allowed women to bring action against their employer if they could show that they were being paid less compared to a male colleague for equal work or work of the same value. The Sex Discrimination Act 1975 forbade both direct and indirect discrimination on the basis of sex, and the Race Relations Act 1976 expanded the scope of anti-discrimination law on the basis of race and ethnicity.
In the 1990s, protections against discrimination on the basis of disability was added primarily through the Disability Discrimination Act 1995.
In the 2000s, the scope of employment anti-discrimination laws were expanded to cover sexual orientation (with the passage of the Employment Equality (Sexual Orientation) Regulations 2003), age (the Employment Equality (Age) Regulations 2006), and religion/belief (Employment Equality (Religion or Belief) Regulations 2003).