Ergonomics is the scientific study of people at work. The goal of ergonomics is to reduce stress and eliminate injuries and disorders associated with the overuse of muscles, bad posture, and repeated tasks. Musculoskeletal disorders (MSDs) are conditions that affect the nerves, tendons, muscles and supporting structures, such as the discs in your back. They result from one or more of these tissues having to work harder than they're designed to. Certain workplace conditions, for example, the layout of the workstation, the speed of work, and the weight of the objects being handled influence these factors. In other situations, the psychosocial factors at the workplace may contribute to WMSDs. It is recommended that both physical and psychosocial factors be addressed. Prevention of MSD requires a partnership between the company and each employee.