According to a recent study conducted on sewing machine operators, picking the correct task / office chair could make the difference between working with pain or without, especially if your job makes you susceptible to neck and/or shoulder pain. Researchers evaluated the rates of neck/shoulder pain during a 4-month period in workers using either a task chair with a flat seat pan or curved seat pan. According to results, researchers found the best chair to minimize neck and shoulder pain was an adjustable height task chair with a curved seat pan. While sewing machine operators experience a higher prevalence of neck and shoulder pain as compared with other working populations, it seems reasonable that when choosing a task chair that most would benefit from an a good quality, adjustable height task chair that includes a curved seat pan.
Source: Spine. 32(9):931-938, April 20, 2007.