Physical and injurious consequences have been attributed to occupational exposures to vibration. A set of upper extremity disorders known as Hand-Arm Vibration Syndrome (HAVS) have been reported by workers occupationally exposed to hand-arm or hand transmitted vibration when using hand-held vibratory tools. Chronic back pain and back disorders have been reported by workers occupationally exposed to whole-body vibration during the operation of ground, air, and water vehicles. This webinar will include two sessions to specifically address these two types of exposures. Both sessions will review the existing standards referenced as the guidelines for the respective TLVs®, and will include a discussion of the frequency weightings, their basis, application, and limitations. Emphasis will be placed on defining and calculating the various health risk metrics and how to apply these metrics in a meaningful context to workers and their employers.