7. "Warehouse distribution center" means an establishment as defined by any of the following North American industry classification system ("NAICS") codes, however such establishment is denominated:
- (a) four hundred ninety-three for warehousing and storage but does not include four hundred ninety-three thousand one hundred thirty for farm product warehousing and storage;
- (b) four hundred twenty-three for merchant wholesalers, durable goods;
- (c) four hundred twenty-four for merchant wholesalers, nondurable goods;
- (d) four hundred fifty-four thousand one hundred ten for electronic shopping and mail-order houses; or
- (e) four hundred ninety-two thousand one hundred ten for couriers and express delivery services. * 8. "Work-related musculoskeletal disorders" means work-related conditions (injuries, illness or disorders) of the muscles, nerves, tendons, ligaments, joints, cartilage of the body's musculoskeletal system including the muscles, nerves, tendons, ligaments, joints, cartilage and spinal discs of the upper and lower limbs, neck, shoulders, and back that: (a) are the result of an exposure in the work environment during the performance of work that either causes or contributes significantly to the resulting condition or makes worse or longer-lasting a pre-existing condition; (b) are caused by ergonomic risk factors that include, but are not limited to, rapid pace, forceful exertions, extreme or static postures, repetitive motions, direct pressure, contact stress, vibration or cold temperatures; or (c) are not the result of any instantaneous non-exertion event, such as slips, trips, or falls. * NB Effective June 1, 2025 * 9. "Competent person" shall mean one capable of performing a job hazard assessment to identify and assess existing and predictable ergonomic risk factors in work activities that are a core element of an employee's job or a significant part of the workday that are harmful to employees and reasonably likely to cause or contribute to musculoskeletal disorders. A competent person shall include ergonomists, industrial hygienists, certified safety professionals, or other health and safety professionals who, by possession of a recognized advanced academic degree, certificate, or professional standing or who by extensive knowledge, training, and experience has successfully demonstrated the ability to manage workplace injury risk. * NB Effective June 1, 2025