Stress on Site – Managing Mental Health as a Legal Duty

Work-related stress remains one of the leading causes of ill health across the UK workforce – and in construction, the pressures of deadlines, coordination, and change can amplify the risks. HSE’s latest statistics show that stress, depression and anxiety account for nearly half of all reported work-related ill health, resulting in more than 16 million working days lost in 2023/24.
At MLA, we’re reminding clients that managing stress isn’t optional – it’s a legal duty under the Health and Safety at Work Act and the Management Regulations. This update outlines what we’re seeing on sites, what the law expects, and how MLA can help clients strengthen their occupational health management.
Stress on site – managing mental health as a legal duty

What's showing up in our project reviews lately:

Reactive not proactive management

Stress and fatigue are often discussed only after problems arise. Regular reviews of workload, planning, and supervision rarely include wellbeing as part of risk management.

Unclear responsibilities

Some projects still treat mental health as a HR or welfare matter rather than a health and safety requirement. Regulation 3 of the Management Regulations makes it clear that psychological risks must be assessed like any other hazard.

Lack of training for managers and supervisors

Supervisors play a key role in spotting stress early but are not always trained to recognise behavioural signs such as withdrawal, conflict, or fatigue.

Limited use of wellbeing tools

Few contractors use structured tools such as HSE's Talking Toolkit or Stress Indicator Tool to open conversations with their teams.

Overreliance on posters, not practice

Awareness campaigns are visible, but practical follow-up (regular check-ins, adjustments to demands or work patterns) is often missing.

Key focus points (and what we recommend)

Relevant links and resources