When One Musculoskeletal Injury Can Trigger a Cal/OSHA Ergonomics Review

Frequently Asked Questions

Does one musculoskeletal injury trigger Cal/OSHA Section 5110?

Usually no. The post explains that Section 5110 generally applies when more than one employee doing the same work has a qualifying repetitive motion injury within a 12-month period.

What has to happen for Cal/OSHA's ergonomics rule to apply?

Cal/OSHA looks for a work-related repetitive motion injury that was diagnosed by a licensed physician, where repetitive motion was a causative factor. The key trigger is more than one employee performing the same work having a repetitive motion injury within 12 months.

Why does a single ergonomic injury still matter if the rule is not triggered yet?

One reported case can still lead Cal/OSHA to review workstation design, task pace, training, and injury records. In fast-paced packing and processing work, a first case can be an early warning sign of broader exposure problems.

What should we review after the first reported ergonomic injury?

The post recommends treating the first case as your internal trigger to review the job. That includes watching the task at normal production speed, getting worker input, checking injury and first-aid trends, reviewing tools and workstation fit, and documenting any corrective actions.

What mistakes increase audit risk after an ergonomic injury?

Common gaps include assuming one injury is not enough to act, relying on generic training, calling job rotation a control without checking exposures, and making temporary fixes without follow-up. Poor documentation and overlooking temporary workers doing the same repetitive tasks also raise risk.