This guidance from Acas covers the rights and responsibilities a workplace has towards people taking absence from working.
It covers:
Checking how your workplace deals with absence.
Fit notes and proof of sickness.
Time off because of a mental health issue.
Time off to help someone else.
Keeping in touch during absence.
Unauthorised absence.
Returning to work after absence.
To download the guidance, click here.
Acas December 2021