For many people who work in an office setting, sitting in an office chair without adequate back support can create a great deal of stress on the lower back. You can often find that a back support for your office chair can provide some comfort during a long day. The back supports range from simple curved mesh support that straps onto the back of the seat to smaller padded lumbar supports that go around the bottom of the chair. Both of these support the natural curve of the spine and help to avoid back strain.