Full definition
The science of designing workstations, tools, tasks, and processes to fit the physical and cognitive capabilities of workers, minimizing musculoskeletal disorders (MSDs), fatigue, and errors while maximizing productivity, quality, and safety. Key risk factors for MSDs: repetitive motion, forceful exertion, awkward postures, static postures (prolonged standing or sitting), vibration exposure, and contact stress. Ergonomic interventions in industrial settings: (1) Anti-fatigue mats — reduce standing fatigue by 40-60% (see Anti-Fatigue Mat entry). (2) Adjustable workstations — height-adjustable tables, tool balancers, and tilt fixtures eliminate bending and reaching. (3) Ergonomic hand tools — rubber-overmolded grips (reducing grip force by 30-50%), angled handles, and vibration-dampening materials. (4) Material handling aids — lift tables, vacuum lifters, and manipulators eliminate manual lifting. (5) Task rotation — distributes physical demands across muscle groups. Assessment tools: RULA (Rapid Upper Limb Assessment), REBA (Rapid Entire Body Assessment), NIOSH Lifting Equation, and Strain Index. Per OSHA Ergonomics Guidelines, NOM-036-1-STPS-2018 (Mexico — manual handling), and EN 1005 (European machinery ergonomics). ROI: ergonomic improvements typically return $3-6 for every $1 invested through reduced injury claims, absenteeism, and turnover.