This guide is maintained as a current resource for September 2026 and covers only the laws of England and Wales. Information is for general guidance, not legal advice. Consult a qualified solicitor for advice specific to your situation.
Sex discrimination in employment decisions explained under UK law. Covers Equality Act 2010 protections, tribunal claims, compensation, recruitment and promotion discrimination, and legal remedies in England and Wales.

Sex discrimination in employment decisions occurs when a person is treated unfairly at work or during recruitment because of their sex, pregnancy, maternity status, or gender reassignment. In England and Wales, this is primarily governed by the Equality Act 2010, which prohibits discrimination by employers in all aspects of employment decision-making.
Employment decisions include recruitment, promotion, training, pay, redundancy, disciplinary action, and dismissal. Where sex-based discrimination influences these decisions, an employee or job applicant may bring a claim in the employment tribunal.
Legal Framework: Equality Act 2010
The Equality Act 2010 identifies sex as a protected characteristic. Protection applies to:
- Men and women
- Employees and workers
- Job applicants
- Some self-employed and contract workers
The law prohibits four main types of unlawful conduct:
- Direct sex discrimination
- Indirect sex discrimination
- Harassment related to sex
- Victimisation for raising discrimination concerns
These protections apply throughout the employment lifecycle, from recruitment to termination.
What Counts as Sex Discrimination in Employment Decisions
Sex discrimination arises when employment decisions are influenced by a person's sex rather than merit or capability.
Direct discrimination
Direct discrimination occurs when someone is treated less favourably specifically because they are a man or a woman.
Examples include:
- Refusing to hire a woman because she may become pregnant
- Promoting a man over a better-qualified woman based on assumptions about leadership ability
- Paying employees differently based on sex for the same role
Direct discrimination cannot generally be justified in law.
Indirect discrimination
Indirect discrimination occurs when a workplace policy applies equally to everyone but disadvantages one sex more than the other.
Examples include:
- Requiring full-time availability without considering childcare responsibilities, which may disproportionately affect women
- Imposing rigid scheduling rules that disadvantage employees with caring responsibilities
- Promotion criteria based solely on uninterrupted career progression
Indirect discrimination may only be lawful if the employer can show it is a proportionate means of achieving a legitimate aim.
Pregnancy and maternity discrimination
Special protection applies to pregnancy and maternity. Any unfavourable treatment connected to pregnancy or maternity leave is automatically unlawful.
Examples include:
- Denying promotion due to pregnancy
- Selecting a woman for redundancy because she is on maternity leave
- Reducing bonuses due to absence linked to pregnancy
No justification is allowed for this type of discrimination.
Harassment and sex-related conduct
Harassment includes unwanted behaviour related to sex that creates an intimidating, hostile, or degrading environment.
In employment decisions, harassment may influence outcomes indirectly, such as:
- Excluding someone from promotion opportunities due to gender-based comments
- Creating a workplace culture that discourages women from applying for senior roles
Victimisation
Victimisation occurs when an employee is treated unfairly because they have raised concerns or supported a discrimination claim.
Examples include:
- Refusing promotion after an employee files a grievance about sex discrimination
- Dismissing an employee for giving evidence in a tribunal case
Employment Decisions Where Discrimination Commonly Occurs
Sex discrimination can affect all major employment decisions, including:
Recruitment and hiring
- Biased interview questions about family plans
- Gender-stereotyped assumptions about suitability
- Unequal access to job opportunities
Pay and benefits
- Unequal pay for equal work
- Disparities in bonuses or allowances without objective justification
Promotion and career progression
- Excluding employees based on sex-based assumptions about commitment
- Informal “male-dominated” promotion networks
Disciplinary and dismissal decisions
- Stricter enforcement of rules against one sex
- Disciplinary action influenced by gender stereotypes
Redundancy selection
- Selecting employees based on maternity leave or flexible working status
- Criteria that indirectly disadvantage women without justification
Legal Test Applied by Employment Tribunals
Employment tribunals assess sex discrimination claims by examining:
- Whether the claimant was treated less favourably
- Whether the treatment was because of sex
- Whether a comparator (real or hypothetical) would have been treated differently
For indirect discrimination, tribunals also consider:
- Whether a neutral policy creates disadvantage
- Whether the employer can justify the policy as proportionate
In pregnancy and maternity cases, no comparator is required; the treatment is automatically unlawful if linked to pregnancy or maternity.
Evidence in Sex Discrimination Claims
Evidence is central to employment tribunal claims. Common forms include:
- Emails, messages, and written communications
- Recruitment notes and interview scoring sheets
- Pay records and job descriptions
- Witness statements from colleagues
- HR policies and internal procedures
- Patterns of decision-making across teams
Tribunals may also draw inferences where there is no direct evidence but where circumstances suggest discriminatory intent.
Bringing a Claim to an Employment Tribunal
Step 1: Early Conciliation
Before lodging a claim, the employee must contact ACAS for Early Conciliation. This process aims to resolve disputes without a tribunal hearing.
Step 2: Filing the claim
If unresolved, a claim is submitted to the employment tribunal using the appropriate form, setting out the allegations of discrimination.
Step 3: Tribunal process
The case may involve:
Time Limits for Sex Discrimination Claims
The standard time limit is:
- 3 months less one day from the date of the discriminatory act
For ongoing discrimination, the tribunal may consider a “continuing act” extending the time limit.
Remedies and Compensation
If a claim is successful, the tribunal may award:
Financial compensation
- Loss of earnings (past and future)
- Loss of pension contributions
- Other financial losses linked to discrimination
Injury to feelings
Compensation for emotional distress is awarded based on severity and impact.
Aggravated damages (in limited cases)
May apply where the employer's conduct was particularly serious or insulting.
There is no upper limit on compensation in discrimination cases.
Employer Defences
Employers may argue:
- The decision was based on performance or capability, not sex
- Objective criteria were applied fairly
- A policy was indirectly discriminatory but justified as necessary and proportionate
- There was no evidence of less favourable treatment
However, employers must demonstrate clear, non-discriminatory reasoning supported by evidence.
Common Examples of Unlawful Sex-Based Decision-Making
- Rejecting women for senior roles due to assumptions about commitment
- Paying men more for the same work without justification
- Penalising employees for pregnancy-related absence
- Excluding men from caregiving or flexible roles based on stereotypes
- Promotion decisions influenced by gender bias rather than merit
Practical Impact on Employers
Failure to comply with sex discrimination law can lead to:
- Employment tribunal claims
- Uncapped compensation awards
- Reputational damage
- Breakdown of workplace trust
- Increased scrutiny of HR processes and pay structures
Many organisations implement equality audits and structured decision-making processes to reduce legal risk.
Common Questions from our Readers
Is unconscious bias enough to prove discrimination?
Not on its own. However, tribunals may infer discrimination where decision-making shows consistent bias or unexplained disparities.
Can men bring sex discrimination claims?
Yes. Protection applies equally to all sexes.
Is unequal pay always sex discrimination?
Not automatically. It must be shown that the difference is because of sex, not a lawful material factor.
Does discrimination have to be intentional?
No. Liability can arise even if discrimination was unintentional.
Key Takeaways
Sex discrimination in employment decisions is unlawful under the Equality Act 2010 and can affect recruitment, promotion, pay, dismissal, and other workplace decisions. It includes direct and indirect discrimination, harassment, victimisation, and pregnancy-related unfair treatment. Employment tribunals assess claims based on evidence and legal tests, with compensation available for financial loss and injury to feelings. Employers must ensure decisions are based on objective, non-discriminatory criteria to comply with the law.