Abstract: Many of the injuries in the construction sector are musculoskeletal disorders caused by cumulative trauma. We call these injuries that result from cumulative wear and tear cumulative trauma disorders (CTDs). Back injuries, tendinitis and carpal tunnel syndrome are examples of common CTDs. Workplace risk factors for CTDs include repetitive motions, high forces, awkward postures and vibration exposure. CTDs in the construction industry can be associated with such activities as manual material handling, hand tool usage, awkward postures and prolonged equipment operation.