Display Screen Equipment is in almost every job these days, as computers are used in almost every walk of life. There are guidelines and regulations to help minimise the impact of using these intensively. If you have workers that regularly are at a computer, there should be an assessment done to try to ensure they are set up and working as best they can be at the computer. Also, they should take regular breaks from the screen and desk, to rest and readjust the eyes and skeleton position.
Further details can be found at hse.gov.uk