Question: If a sales representative who spends most of his day in a company car has a neck injury that makes sitting in the car for long periods uncomfortable, is the employer responsible for providing an ergonomic back support to make the sitting position more comfortable, or is that the responsibility of the worker?

Should it be treated the same as providing an ergonomically suitable chair at an office desk, or does the fact that the worker has a personal injury put the responsibility on to him to provide for his own requirements?