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The business case for neurodiversity at work

Writer: Divergent Thinking
Divergent Thinking
Jul 23
9 min read

Updated: Jul 27

The business case for neurodiversity at work is strongest when it starts with a specific workplace barrier and the organisation’s own data. It is not a promise that every adjustment will save money or that every neurodivergent person brings the same strengths.

A credible case asks three questions:

  1. Where is the current way of working creating avoidable cost, delay or risk?

  2. What proportionate change could reduce that friction?

  3. What evidence would show whether the change helped?

This approach gives leaders something they can test. It also keeps the legal and human reasons for inclusion intact rather than making a person’s support conditional on a promised return on investment.

Start with the barrier, not the label

Counting how many employees are, or may be, neurodivergent does not tell you what to invest in. A diagnosis is not a forecast of performance, support needs or commercial value.

Start with a process that people can observe:

  • capable candidates abandoning an unclear recruitment process;

  • new starters waiting too long for agreed adjustments;

  • managers repeatedly escalating communication or workload problems;

  • employees spending time chasing priorities that were never made explicit;

  • support being delayed while people are asked for unnecessary proof;

  • the same preventable issue appearing in grievances, exit feedback or absence reviews.

The business question is not “What is a neurodivergent employee worth?” It is “Which parts of our work design are creating friction, and what would it take to improve them?”

The legal case and the business case are not the same

Employers should not require a positive financial return before meeting a legal duty.

Under the Equality Act 2010, disability depends on the effect of an impairment: it must have a substantial and long-term negative effect on normal day-to-day activities. A neurodivergent person may meet that definition, but the label alone does not settle the question. GOV.UK explains the disability test in plain English.

Where the duty applies, an employer must take reasonable steps to remove or reduce the disadvantage. The Equality and Human Rights Commission’s employment guidance explains that what is reasonable depends on the circumstances.

The financial case sits beside that duty. It can help an organisation prioritise wider changes, secure resources and evaluate implementation. It does not replace legal advice or determine whether an individual should receive support.

Where to look for measurable value

The most useful measures are usually already held by HR, recruitment, finance or operations. Choose only those that relate to the problem you are trying to solve.

| Area | Question to investigate | Useful evidence | |---|---|---| | Recruitment | Are people being screened out by barriers unrelated to the job? | Completion and withdrawal by stage, adjustment-response time, candidate feedback and assessment results | | Onboarding | Are new starters receiving the information and support they need in time? | Early attrition, time to agreed adjustments, induction feedback and repeated clarification requests | | Retention | Are preventable workplace barriers contributing to people leaving? | Voluntary turnover, exit themes, stay interviews, absence patterns and hard-to-fill roles | | Adjustments | Is the process timely, consistent and proportionate? | Days from request to decision and implementation, repeated approvals, unresolved actions and review dates | | Management | Are unclear briefs, feedback or workload decisions creating rework? | Escalations, repeated task corrections, missed handovers, manager time and employee feedback | | Learning | Did training change what managers do? | Behaviour checks, adjustment conversations, confidence linked to scenarios and follow-up actions |

Do not force a diagnosis-level breakdown where the numbers are too small or disclosure is incomplete. Use aggregated process measures and voluntary feedback wherever possible.

Health and disability information receives extra protection under data-protection law. The Information Commissioner’s Office employment guidance should be checked before collecting or linking sensitive workforce data. Involve the organisation’s data-protection lead and collect no more than the decision genuinely requires.

Use your own costs, not a stock replacement figure

Generic claims that replacing an employee always costs £30,000, six months’ salary or another fixed amount are not reliable enough for a serious investment decision. Costs differ by role, sector, labour market and how the organisation recruits.

The CIPD recommends using the organisation’s own evidence. Its turnover analysis identifies costs such as:

  • resignation administration;

  • recruitment and selection;

  • interim cover during a vacancy;

  • induction and training.

A simple direct-cost calculation is:

recruitment spend + selection time + interim cover + onboarding and training + other documented role-specific costs

Keep unmeasured productivity estimates separate. If a value depends on an assumption, label it as an assumption and show how the result changes when that assumption changes.

The same discipline applies to absence, grievances and delayed adjustments. Count the costs you can evidence. Do not attribute every departure, delay or performance concern to neuroinclusion simply because a neurodivergent person was involved.

What current evidence can and cannot tell us

Current UK evidence supports action, but it does not provide a universal neuroinclusion ROI.

In an Acas poll published in January 2025, 1,650 line managers from its subscriber list selected barriers they had encountered when making adjustments. Lack of manager knowledge was selected by 59%, unclear internal processes by 22% and cost by 19%.

This was a subscriber poll, not a representative survey of every UK employer. It should be treated as a useful prompt: investigate manager capability and process design, rather than assuming cost is the main obstacle.

An independent 2025 evidence review hosted by Acas found broad agreement around manager support, individual adjustments and clearer processes. It also found that evidence for the effectiveness of specific adjustments is mixed and often focused narrowly on autistic employees. The paper is independent research, not Acas guidance.

The Buckland Review of Autism Employment also focused on autism rather than every form of neurodivergence. It noted that concerns about adjustment cost can act as a barrier and recommended pilots and evaluation before wider rollout.

The practical conclusion is modest but useful: make a proportionate change, measure it and learn from the result. Do not turn a case study or condition-specific finding into a promise for every person or workplace.

Build the case in six steps

1. Define one workplace problem

Choose a problem that leaders recognise and people experience. Examples include an adjustment process that takes too long, a recruitment stage with avoidable withdrawals or inconsistent manager responses to disclosure.

Avoid starting with a broad commitment such as “become fully neuroinclusive”. It is too wide to cost or evaluate.

2. Establish a baseline

Record what happens now. Use a sensible period and state the denominator.

For example:

  • median days from adjustment request to implementation;

  • early voluntary leavers as a proportion of starters;

  • candidates withdrawing from one assessment stage as a proportion entering it;

  • managers able to handle a defined workplace scenario before training.

Do not collect new diagnosis data simply to make the case look more precise.

3. Listen before choosing the intervention

Numbers can show where to look. They do not explain the whole problem.

Use accessible, consent-led listening to understand what creates the delay or barrier. Include the people who use the process and those who administer it. Be clear about how comments will be reported and avoid creating pressure to disclose.

For a broader systems review, a neuroinclusion audit can examine recruitment, policy, communication and management practice together.

4. Choose a proportionate change

Match the action to the evidence. A new organisation-wide programme is not always the right starting point.

The change might be:

  • clearer job adverts and assessment instructions;

  • a single route for requesting and approving adjustments;

  • written priorities after meetings;

  • manager practice using realistic workplace scenarios;

  • faster access to common tools;

  • a review point for checking whether an adjustment still helps.

Where the barrier is individual and role-specific, a non-diagnostic workplace needs assessment may be more appropriate than a broad organisational initiative.

5. Agree cost, owner and measures

Record the direct cost, internal time, accountable owner and review date. Choose one or two primary measures rather than a long list that nobody maintains.

If the intervention is practical training for managers, measure an observable behaviour as well as attendance or satisfaction. A manager’s ability to clarify a brief or agree an adjustment is more useful than the number of people who completed the session.

For a fuller evaluation framework, see how to measure whether neurodiversity training worked.

6. Review and decide

Compare the result with the baseline. Ask:

  • Was the change delivered as intended?

  • Did the chosen measure improve?

  • What else may have influenced the result?

  • Did the change create any new barrier?

  • Should the organisation continue, adapt or stop?

Government guidance on evaluating workplace interventions recommends setting a baseline, defining intended outcomes, piloting where possible and reviewing implementation as well as results.

A one-page business-case template

Use this structure for a leadership paper or budget request.

Decision requested

State the approval, budget or pilot you need.

Workplace barrier

Describe the process problem without assigning it to a diagnosis.

Current evidence

Give the baseline, denominator, period and any relevant qualitative evidence.

Proposed change

Explain what will change, for whom and how it is expected to address the barrier.

Cost and resource

Include external spend, internal time, ownership and any ongoing cost.

Legal, access and data safeguards

Record the relevant adjustment, confidentiality and data-protection boundaries. Get specialist advice where required.

Success measures

Choose the primary outcome, implementation check and unintended-effect check.

Review

Name the owner, review date and decision rule for continuing, adapting or stopping.

Claims to leave out

A credible business case does not need inflated claims. Remove:

  • a universal percentage for how much of the workforce is neurodivergent;

  • the assumption that every neurodivergent person brings the same strengths;

  • a claim that every adjustment is free or inexpensive;

  • a fixed replacement cost presented as true for every role;

  • tribunal trends or award headlines used as a sales tactic;

  • promises that training will increase retention, innovation or productivity;

  • the suggestion that a workplace assessment is insurance against legal action;

  • a productivity figure taken from one job, programme or diagnosis and applied to everyone.

These claims may make a presentation look decisive, but they weaken trust and make proper evaluation harder.

Frequently asked questions

Is there a financial case for neurodiversity at work?

There can be. The strongest case identifies a specific workplace barrier, records the current cost or resource demand and tests whether a proportionate change improves the result. There is no single ROI that applies to every organisation.

Are workplace adjustments expensive?

Costs vary. Some adjustments change communication, timing or process and may require little direct spend. Others involve equipment, specialist support or job redesign. The right question is whether the proposed adjustment is effective, reasonable and proportionate in the circumstances.

Can Access to Work pay for support?

Access to Work may provide practical support where needs go beyond the reasonable adjustments an employer is legally required to make. Eligibility, the type of support and any employer contribution depend on the individual circumstances. Funding is not automatic. The cited scheme covers England, Scotland and Wales; Northern Ireland has a different system. See the current Access to Work guide for employers.

How should an employer calculate neuroinclusion ROI?

Calculate ROI only where both the observed benefit and intervention cost can be monetised credibly:

(observed financial benefit − intervention cost) ÷ intervention cost

Show every assumption and do not treat a change that happened afterwards as proof that the intervention caused it. When a benefit cannot be monetised responsibly, report the cost and observed outcome separately.

Does someone need a diagnosis before support can begin?

Not always. Acas advises employers and workers to discuss, try and review adjustments, including where someone is unsure which support may help. Whether the Equality Act duty applies depends on the individual circumstances. A diagnosis should not replace a conversation about the person, the role and the barrier.

What employers should do next

Choose one part of the employee journey and make the current friction visible. Agree the baseline, test a proportionate change and review what happens. That produces a more credible case than applying a national estimate or a promised productivity uplift to the whole workforce.

If the problem spans recruitment, communication, adjustments and management practice, start with evidence rather than a predetermined programme.

Build an evidence-led case for action

A neuroinclusion audit can identify recurring barriers, prioritise the changes worth testing and give leaders a clearer basis for deciding where to invest.

This article provides general workplace information, not legal advice.

References

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