If you're working at home or in the office for a long time, a desk chair is required for good posture. Desk chairs with an occupational health and safety certification are suitable for sitting for hours on end for work. There are 2 standards, NEN and NPR. Ergonomics are better with an desk chair than with a kitchen chair, for example. How ergonomic the chair is depends on the ways you can adjust the chair. With a basic model, this is often only the sitting height and the armrests. More elaborate models, for example, also have a lumbar support for even more comfort and support. Office chairs with more adjustment options are sensible for people who work seated for many hours a day.