Musculoskeletal disorders among clerical workers in Los Angeles: a labor management approach.

BACKGROUND

Musculoskeletal disorders (MSDs) persist among clerical workers despite ergonomic advances.

METHODS

A cross-sectional survey among 2,310 clerical workers investigated MSD cases, defined as musculoskeletal discomfort and seeking treatment for that discomfort in the past 12 months. A modified Poisson regression model was adopted to assess the association between work and individual factors and the risk of MSDs.

RESULTS

Over half of respondents reported musculoskeletal discomfort. The prevalence of MSD cases was: 37.2% neck/shoulders, 21.7% upper extremities, 18% lower extremities, and 34.3% back region. Elevated risk of MSDs was associated with less workstation adjustability; work schedule, gender, age, and BMI were also significant. Positive trends were observed between computer use and MSDs for the neck/shoulder region and the effect was amplified among those reporting insufficient workstation adjustability and lacking computer ergonomics training.

CONCLUSIONS

Results demonstrate the need to limit continuous computer use and to improve the human-machine interface through adjustable workstations and worker training to enhance use of adjustable features.