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Construction site first aid requirements calculator How many first-aiders your site needs, which course, and what else to put in place.

  • Free, no account
  • Based on HSE guidance L74, 2024
  • Nothing is stored
Where do they work? (not listed? pick the closest)

Higher risk Building, demolition, groundworks, site maintenance

What’s the most people on site at once?

More options
What applies here

Shifts

Current first-aiders

Your first-aid cover

Enter how many people

How many first-aiders a construction site needs

Construction is in HSE’s higher-risk band. Count the most people on site at once, including other contractors’ workers you cover.

Higher risk Construction sites
PeopleHSE suggests
Under 51 appointed person No course needed
5 to 501 first-aider EFAW (1 day), or FAW (3 days) where serious injuries are likely
Over 501 first-aider for every 50 FAW (3 days). 51 people: 2 · 101 people: 3

Construction site first aid checklist

  • Tell every worker at induction who the first-aiders are and where the kit is. Put the same on the site notice.
  • Cover every shift, and train a spare for holidays and sickness.
  • Keep sterile water for eyes and wounds until mains water is on.
  • Renew certificates every 3 years. HSE strongly recommends a yearly refresher.
  • Record each incident, and report serious injuries under RIDDOR.

Who provides first aid on a shared construction site

Each employer, and each self-employed person, provides first aid for their own people. One employer, such as the principal contractor, can cover everyone if all agree and workers are told.

HSE strongly recommends a written agreement between the employers. Say who provides the first-aiders, how many, and on which shifts. If the shared cover falls short, your own duty remains.

Sources

HSE’s guidance covers Great Britain. Northern Ireland has its own first-aid regulations.