One of the most crucial factors is ergonomics. Ergonomics is the study of work environment efficiency. It also relates to the comfort of a working environment. Check out this 123Ink.ca article exploring how ergonomic office chairs can prevent health problems caused by prolonged sitting. If you are working sitting down for extended periods of time, an office chair that is not ergonomic can cause stiffness, neck pain, and back pain. These kinds of issues lead to a lack of productivity.