We often think exclusion in the workplace is just a moral issue. However, as explored in The Hidden Cost of Exclusion at Work, the real cost is also financial, and it adds up quickly.
1. Reduced Productivity
- In the UK, poor mental health costs employers between £42 billion and £45 billion annually, according to the Health and Safety Executive (HSE) and Deloitte.
- These costs are made up of absenteeism (£7 billion), presenteeism (£27–£29 billion), and staff turnover (£9 billion) (Deloitte UK Mental Health and Employers Report).
- Employees with poor mental health lose an average of 21.6 working days per year, either through absenteeism or reduced productivity.
2. Higher Turnover & Presenteeism
- In the UK, replacing staff due to poor mental health costs £22 billion, with an additional £6 billion in absenteeism and £28 billion in presenteeism (Spill).
- 48% of UK employees have looked for a new job in the past year, with poor workplace culture cited as a key reason (CIPD).
3. Impact on Mental Health & Absence
- Nearly 50% of staff report a decline in well-being; 28% say they’re miserable at work (Spill).
- UK employees take 18 days/year off for stress, depression, or anxiety, more than for physical illness (Spill).
- Low psychosocial safety climates correlate with 3× higher depression rates and 72% more presenteeism (Wikipedia).
4. Legal & Bullying Costs
- In the UK, the CIPD reports that 15% of employees have experienced bullying in the workplace.
- A 2021 study by Acas estimated the cost of workplace conflict in the UK at £28.5 billion annually. This includes costs related to formal procedures, resignations, and sickness absence.
5. The Price of Non-Inclusion
- The Centre for Economics and Business Research (CEBR) found that closing the employment gap for disabled people could boost the UK economy by £45 billion.
- Organisations that prioritise disability inclusion outperform competitors and enjoy lower legal/adjustment expenses (The Times).
Summary of Costs
| Impact Area | Typical Costs |
| Lost productivity & absenteeism | £42–£45 billion in UK annually |
| Turnover & presenteeism | £50 billion+ in UK turnover + absenteeism costs |
| Mental-health driven absence | 18 days/year per employee in UK |
| Bullying/conflict legal costs | £28.5 billion annually in UK |
| Lack of inclusion overall | £45 billion lost potential from disability exclusion |
Why Inclusion Pays
- Inclusive environments reduce absenteeism, bolster retention, boost productivity, and avoid costly litigation.
- Simple adjustments (quiet spaces, flexible work, manager training, inclusive hiring) yield high returns for minimal investment (The Times).
- Mental health investment offers up to £5 return per £1 spent (Deloitte).
Resources for Action
- Deloitte UK – Mental health & employer impact report: Link
- CIPD – Reasons for employee turnover and mental health reports: Link
- Health and Safety Executive (HSE) – Workplace stress statistics: Link
- Acas – Costs of workplace conflict: Link
- Centre for Economics and Business Research (CEBR) – Economic boost from disability inclusion: Link
Take Action Now
Exclusion isn’t just unethical, it’s unaffordable. You don’t need grand gestures. Start by:
- Reviewing culture and psychological safety
- Training managers to spot and reduce exclusion
- Offering mental-health support and flexible work
- Designing inclusive hiring, onboarding & retention systems
If you’re ready to translate these figures into real change in your workplace, I can help. Through consultancy, workshops, or speaking on inclusive culture and mental health. Get in touch.