Does anyone know of any case law that would cover working a thirteen hour nightshift and then going on to volunteer at the same place as they work but in a different area (both being at the same charity). The nightshift is paid and normally they would get 4/5 hours sleep but not always guaranteed.
The WTD does not cover volunteer work and is something I know you cannot control once they leave their place of work.
For me, I would say that we have a moral obligation to ensure they received their prescribed rest after work.
Question - How would we stand if they became ill or had an accident while volunteering after completing a thirteen hour nightshift?

Dont worry its not enforced unlike speeding or shoplifting.

¨Employers must make sure that workers don’t work more than an average of 8 hours in a 24-hour period. Workers can’t opt out of this working limit¨

https://www.gov.uk/night-working-hours

Apart from protecting the Charity from the harm it could do even if there was no prosecution, I am also concerned for the employee's well being.

Excellent advice John and thank you for the link. I now have a clearer picture of where I can take this and review and update our employee contracts, risk assessments and policies.