Disability in the Workplace: UK Law and Employer Obligations

Disability in the workplace is governed by a comprehensive framework of UK legislation designed to protect disabled individuals from discrimination and to ensure they can participate fully in employment. The cornerstone of this framework is the Equality Act 2010, which consolidated and replaced previous anti-discrimination legislation including the Disability Discrimination Act 1995. This guide explains the legal definition of disability, the types of discrimination that are prohibited, the duty to make reasonable adjustments, the obligations that apply throughout the employment lifecycle and the specific considerations that arise in relation to mental health conditions.

Legal Definition of Disability Under the Equality Act 2010

Under Part 2, Chapter 1, Section 6 of the Equality Act 2010, a person is considered disabled if they have a physical or mental impairment that has a substantial and long-term adverse effect on their ability to carry out normal day-to-day activities. Each element of this definition carries specific legal meaning:

Physical or mental impairment: This includes a wide range of conditions. Physical impairments encompass mobility difficulties, sensory impairments (such as visual or hearing loss), chronic pain conditions, neurological conditions (such as epilepsy or multiple sclerosis) and conditions affecting internal organs. Mental impairments include learning disabilities, developmental conditions (such as autism spectrum conditions and ADHD) and mental health conditions (discussed in detail below).
Substantial: “Substantial” means more than minor or trivial. It does not need to be severe. The test considers the effect of the impairment without the benefit of treatment or medication — so a condition that would have a substantial effect if medication were withdrawn is still considered substantial, even if the medication currently controls the symptoms.
Long-term: An impairment is long-term if it has lasted, or is likely to last, for at least 12 months, or if it is likely to last for the rest of the person's life. Conditions with fluctuating or recurring effects are also covered if the substantial adverse effect is likely to recur.
Normal day-to-day activities: These are activities that most people carry out on a regular basis, such as walking, climbing stairs, using a computer, concentrating, remembering information, communicating and carrying everyday objects.

Certain conditions are automatically deemed to be disabilities under the Act, including cancer, HIV infection and multiple sclerosis (from the point of diagnosis). Severe disfigurements are also treated as having a substantial adverse effect.

The historical Disability Discrimination Act 1995 (DDA) previously provided the primary framework for disability rights in employment. Although the DDA has been superseded by the Equality Act 2010, it remains relevant to understanding the evolution of disability rights in the UK, and case law decided under the DDA continues to inform the interpretation of the Equality Act.

Protected Characteristics and the Duty Not to Discriminate

Disability is one of the nine protected characteristics under Part 2 of the Equality Act 2010. The Act prohibits several forms of discrimination in the employment context, as set out in Part 5 of the Act:

Direct discrimination (Section 13): Treating a person less favourably because of their disability than a person without that disability would be treated in comparable circumstances. Unlike other protected characteristics, direct disability discrimination cannot be justified.
Indirect discrimination (Section 19): Applying a provision, criterion or practice that puts disabled people at a particular disadvantage compared with non-disabled people, unless it can be objectively justified as a proportionate means of achieving a legitimate aim.
Discrimination arising from disability (Section 15): Treating a person unfavourably because of something arising in consequence of their disability (for example, dismissing someone for a high level of sickness absence caused by their disability), unless it can be objectively justified. This form of discrimination only applies where the employer knew, or ought reasonably to have known, that the person was disabled.
Harassment (Section 26): Unwanted conduct related to disability that has the purpose or effect of violating the person's dignity or creating an intimidating, hostile, degrading, humiliating or offensive environment.
Victimisation (Section 27): Subjecting a person to a detriment because they have done a protected act, such as raising a discrimination complaint or giving evidence in a colleague's discrimination claim.

These protections apply to all stages of the employment relationship, from recruitment through to termination and beyond (including the provision of references).

The Duty to Make Reasonable Adjustments

One of the most important provisions of the Equality Act 2010 is the duty to make reasonable adjustments, set out in Sections 20 and 21 and further detailed in Schedule 8. This duty arises where a provision, criterion or practice of the employer, a physical feature of the workplace, or the absence of an auxiliary aid or service places a disabled person at a substantial disadvantage compared with non-disabled people.

The duty requires employers to take such steps as are reasonable to avoid the disadvantage. What is “reasonable” depends on all the circumstances, including:

The effectiveness of the adjustment in removing or reducing the disadvantage
The practicability of making the adjustment
The cost of the adjustment and the employer's financial resources
The size and resources of the organisation
The availability of external funding (such as the Access to Work scheme)
The extent of any disruption the adjustment would cause

Examples of reasonable adjustments commonly made in UK workplaces include:

Modifying working hours, shift patterns or break schedules
Allowing home or hybrid working
Providing specialist equipment (such as ergonomic furniture, screen readers or voice recognition software)
Adjusting performance targets or deadlines
Reallocating minor duties to another employee
Providing additional training or mentoring
Making physical alterations to the workplace (such as installing ramps, widening doorways or improving lighting)
Allowing time off for medical appointments or treatment
Modifying recruitment and selection processes (such as allowing extra time in assessments or providing materials in accessible formats)

The duty is anticipatory in nature for service providers, but in the employment context, it is triggered when the employer knows, or ought reasonably to know, that an employee or job applicant is disabled. Employers should not wait for a formal request before considering adjustments. ACAS guidance strongly recommends that employers engage proactively with disabled employees to identify and implement appropriate adjustments.

Obligations Throughout the Employment Lifecycle

Recruitment

The Equality Act 2010 restricts employers from asking health-related questions before offering a job (Section 60), except in limited circumstances (such as determining whether reasonable adjustments are needed for the recruitment process). This prevents employers from screening out disabled candidates at an early stage. Once a conditional offer is made, health enquiries may be made, but any subsequent withdrawal of the offer must be justified and non-discriminatory.

During Employment

Employers must ensure that disabled employees are not disadvantaged in relation to terms and conditions of employment, pay and benefits, training and development, opportunities for promotion, performance management and access to facilities. Regular reviews of workplace adjustments should be carried out to ensure they remain effective, particularly when the employee's condition changes or when there are changes to the work environment or job role.

Dismissal and Redundancy

Dismissing an employee because of their disability, or because of something arising from their disability (such as sickness absence), without first exploring reasonable adjustments and following a fair process, is likely to constitute both unfair dismissal and disability discrimination. In redundancy situations, the selection criteria must not indirectly discriminate against disabled employees (for example, using absence records without discounting disability-related absence).

Mental Health as a Disability

Mental health conditions can constitute a disability under the Equality Act 2010 if they meet the statutory test of having a substantial and long-term adverse effect on normal day-to-day activities. Conditions that have been recognised as disabilities in case law and ICO guidance include:

Depression: Where it is recurrent or chronic and has a substantial effect on concentration, motivation, sleep, social interaction and the ability to carry out normal activities
Anxiety disorders: Including generalised anxiety disorder, social anxiety and panic disorder, where the effects are substantial and long-term
Post-traumatic stress disorder (PTSD): Which can have profound effects on concentration, memory, sleep and emotional regulation
Bipolar disorder: Which is typically considered a long-term condition with fluctuating effects
Obsessive-compulsive disorder (OCD): Where the effects on daily functioning are substantial
Eating disorders: Where they have a substantial and long-term effect on the individual's ability to carry out normal activities

Employers should be aware that mental health conditions are not always visible, and employees may be reluctant to disclose them due to stigma. ACAS guidance recommends creating an open and supportive workplace culture where employees feel safe to discuss mental health concerns. Line managers should be trained to recognise signs of mental ill health and to respond appropriately, including by signposting employees to occupational health services and employee assistance programmes.

Workplace Adjustments Process and Documentation

A structured process for managing workplace adjustments is essential for compliance and for demonstrating that the organisation takes its duties seriously. The process should include:

Identification: Recognising that an employee may be disabled and may require adjustments. This may be triggered by a disclosure from the employee, a referral to occupational health, a pattern of sickness absence or a line manager observation.
Discussion: Having a confidential, supportive conversation with the employee to understand their condition, its effects on their work and what adjustments might help. The employee is the expert on their own condition and should be actively involved in identifying solutions.
Assessment: Where appropriate, obtaining specialist advice from occupational health, an Access to Work assessor or a relevant medical professional. This is particularly important for complex or significant adjustments.
Implementation: Putting the agreed adjustments in place promptly. Delays in implementing reasonable adjustments can themselves constitute a failure to comply with the duty.
Review: Reviewing the effectiveness of adjustments at regular intervals and whenever circumstances change. Adjustments should be adapted as the employee's condition evolves or as the work environment changes.
Documentation: Recording the discussions, assessments, decisions and adjustments made. This documentation is essential for demonstrating compliance with the Equality Act and for defending any potential claims. Records should be kept confidentially and in accordance with the UK GDPR.

For further guidance on human resources policies and procedures or our equality, opportunities and diversity policies, please explore our services. Policy Pros can write, review or update your disability and reasonable adjustments policies to ensure they are fully compliant with the Equality Act 2010, ACAS guidance and current best practice. Contact us to discuss your requirements.