Limited Warranty Work Smart chairs are warranted from the date of purchase against failure due to material and workmanship as follows: 15 Years on all non-moving metal parts. 5 Years on component parts including Control mechanisms, pneumatic cylinders, wood, plastic parts, base and casters. 3 Years on upholstery fabric and foam against wear and deterioration. We cannot warrant leather against routine scratching and scuffing, as all leather is subject to minor blemishes in use. *All warranties are limited to the original purchaser for normal commercial usage defined as a standard forty hour work week by persons weighing 250 lbs. or less. This warranty will not cover labor, freight or damage from misuse, abuse, negligence, alteration, accident, vandalism, rusting, acts of nature or any other event beyond the control of Office Star Products. The warranty does not cover cosmetic damage that may result from normal use. Liability for incidental or consequential damages is excluded. The user assumes all risk of injury resulting from use of this product. When usage is more than 40 hours per week, a two year warranty on all parts applies. Fabric and foam is warranted for one year. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.