Job level risk assessment using task level ACGIH hand activity level TLV scores: a pilot study.
Drinkaus-P; Sesek-R; Bloswick-DS; Mann-C; Bernard-T
Int J Occup Saf Ergon 2005 Jul; 11(3):263-281
Existing upper extremity musculoskeletal disorder analytical tools are primarily intended for single or mono-task jobs. However, many jobs contain more than 1 task and some include job rotation. This case/control study investigates methods of modifying an existing tool, the American Conference of Governmental Industrial Hygienists (ACGIH) Hand Activity Level (HAL) Threshold Limit Value (TLV), to assess the upper extremity risk of multi-task jobs. Various methods of combining the task differences and ratios into a job level assessment were explored. Two methods returned significant odds ratios, (p < .05) of 18.0 (95% CI 1.8-172) and 12.0 (95% CI 1.2-120). These results indicate that a modified ACGIH HAL TLV may provide insight into the work-related risk of multi-task jobs. Further research is needed to optimize this process.
Musculoskeletal-system-disorders; Job-analysis; Risk-analysis; Cumulative-trauma-disorders; Injury-prevention; Repetitive-work; Job-rotation; Extremities;
Author Keywords: HAL; TLV; hand activity level; multitask; work-related risk assessment
Phillip Drinkaus, Department of Mechanical Engineering, Ergonomics and Safety Program, University of Utah, 50 S. Central Campus Drive, RM 2110 MEB, Salt Lake City, UT 84112-9208
International Journal of Occupational Safety and Ergonomics
Rocky Mountain Center for Occupational and Environmental Health, Department of Family & Preventive Medicine, University of Utah, Salt Lake City, Utah