Work-related falls among union carpenters in Washington State before and after the Vertical Fall Arrest Standard

Area of Science:

• Occupational Health
• Construction Safety
• Injury Prevention

Background:

• Washington State implemented a revised fall standard for construction in 1991.
• This preceded the Federal OSHA Safety Standard for Fall Protection in 1994.

Purpose of the Study:

• To evaluate the impact of Washington State's fall standard change on fall rates and injury severity.
• To analyze trends in injuries among union carpenters post-standard implementation.

Main Methods:

• Observational study of union carpenters in Washington State.
• Analysis of fall rates and injury severity measures before and after the 1991 standard change.
• Adjustment for temporal trends in overall injury rates.

Main Results:

• A significant decrease in the rate of falls from height was observed post-standard.
• The reduction in falls persisted even after adjusting for overall injury rate declines.
• Significant reductions in lost workdays and costs per fall event were noted.

Conclusions:

• The Washington State Vertical Fall Arrest Standard demonstrated significant effectiveness among carpenters.
• Accounting for overall injury trends is crucial for accurately assessing intervention effectiveness.
• Failure to control for temporal patterns can overestimate intervention impact.