Is this work-related stress or due to problems outside work?
Times, Sunday Times
A quarter have called in sick due to work-related stress.
The Sun
A quarter of sick days can be attributed to work-related stress.
Times, Sunday Times
But less so if it's work-related stress - being off sick just avoids the issue.
The Sun
Employers have a duty to control work-related stress and ensure the health of employees, regardless of the urgency of deadlines.
Times, Sunday Times