A comfortable work space can help you feel your best and improve productivity. When seated, the thighs should be horizontal and knees positioned at about the same level as the hips. According to the American Academy of Orthopaedic Surgeons, it is also acceptable for knees to be slightly higher than the hips. Using a foot rest is a cost-effective tool to achieve proper alignment and a comfortable working position. Foot rests can help to reduce the stress placed on the feet, legs and spine. They also promote circulation in the legs to prevent deep vein thrombosis. Use a foot rest to increase personal comfort.