The National Research Council of Canada defines ergonomics as "the application of scientific knowledge to the workplace in order to improve the well-being and efficiency of both the individual and the organization."
In other words, it is the science of designing the job to fit the worker, not forcing the worker's body to fit the job. Although understanding ergonomic principles can help us prevent injury, we may be reluctant to employ them in our everyday work habits until our bodies actually start to hurt.
Examples of warning signs of potential ergonomic-related issues are: aching muscles or joints, muscle weakness and fatigue, headaches, manual dexterity difficulties, and many others.
It is very important to acknowledge the warning signs as early as possible and do something about it: if you are experiencing discomfort at work, please advise your supervisor and access the resources on this page.