4. Weight CapacityAll office chairs have a weight capacity, which you should follow for both your safety and the safety of your chair. If you weigh more than the capacity for which your office chair is rated, it could break under the stress of everyday use.You’ll find most office chairs have a 200 to 250 pound weight capacity. The good news is that some office chairs are designed specifically for heavier workers. Known as big and tall office chairs, they feature a sturdier construction to provide a higher weight capacity. Big and tall office chairs are available in 300-, 400- and 500-pound weight capacities. In addition to a higher weight capacity, some models also feature larger seats and backrests. Choose an office chair with a higher weight capacity than the weight of your body.