A properly set-up computer workstation can eliminate discomfort and even prevent it from occurring in the first place.
These self-help courses can help you set-up a safe and comfortable computer workstation:
Office Lighting and Computer Use for Eye Comfort
Sit-Stand Workstations, Help for Workers
Sit-Stand Workstations, Help for Employers
Working from Home Offices? Here's some information to help stay comfortable and productive:
Don't bend, don't break: Setting up a safe and healthy workspace for teleworking (F417-289-000)