This is a useful FAQ Document by the UK Health and Safety Executive.
How long and how often should breaks be for DSE work and what should I do during breaks?
Answer: This depends on the kind of work you are doing. There is no legal guidance but it is advisable to break up long spells of DSE work. Short frequent breaks are better than longer ones but less frequent ones such as 5–10 minute breaks every hour are better than 20 minutes every 2 hours. Ideally users should have some choice about when to take breaks. Most jobs provide opportunities to pause from DSE work to do other tasks, such as filing or copying. If there are no such natural changes of activity in your job, your employer should plan for you to have rest breaks. It is best if breaks or changes of activity allow the user to get up from their workstation and move around, or at least stretch and change posture.
Click here > FAQs - Musculoskeletal Disorders - Display Screen Equipment
Free to try QHSE Software Solutions for Businesses
Risk Assessment Software
Accident Managenent Software
Document Issuing and Management System
Staff Sickness and Absenteeism Management and Trend Finding Software