OSHA Workplace Injury Research

Mechanical Parts Cause Severe Crush Injuries

OSHA recorded 170 severe cases involving mechanical parts, with amputations accounting for 49% of all reported incidents.

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How often these injuries happen

OSHA recorded 170 severe incidents involving mechanical parts and engines over the last decade. These accidents frequently result in amputations, which account for 49% of all reported cases, followed by fractures.

The severity of these injuries is underscored by the fact that 56% of all cases involve damage to your fingers. These injuries often lead to permanent impairment and require extensive medical intervention, including multiple surgeries.

Reported 2025 (partial year)
010203020152025
Data: Federal OSHA Severe Injury Reports (29 states). Jan–Jul 2025, partial year.

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How these injuries happen

Injuries involving mechanical parts are often caused by being struck by falling objects, which accounts for 42% of incidents. You are also frequently compressed between running equipment and other objects, or suffer injuries when components like pulleys and belts fail during maintenance or normal operation.

1 Struck by falling object
Incidents
68
Share
42% of reported incidents
2 Compressed between running equipment and other object(s)
Incidents
33
Share
20% of reported incidents
3 Struck by propelled object or substance
Incidents
14
Share
9% of reported incidents
4 Caught or wedged between objects— nonrunning
Incidents
9
Share
6% of reported incidents
5 Overexertion while materials moving by hand
Incidents
8
Share
5% of reported incidents
6 Struck by suspended or swinging object
Incidents
6
Share
4% of reported incidents
7 Struck by propelled, falling, or suspended object— unspecified
Incidents
4
Share
2% of reported incidents
8 Caught, entangled in running powered equipment— normal operation
Incidents
4
Share
2% of reported incidents
Cause Incidents Share
1Struck by falling object 6842% of reported incidents
2Compressed between running equipment and other object(s) 3320% of reported incidents
3Struck by propelled object or substance 149% of reported incidents
4Caught or wedged between objects— nonrunning 96% of reported incidents
5Overexertion while materials moving by hand 85% of reported incidents
6Struck by suspended or swinging object 64% of reported incidents
7Struck by propelled, falling, or suspended object— unspecified 42% of reported incidents
8Caught, entangled in running powered equipment— normal operation 42% of reported incidents

Where injuries happen most

Manufacturing accounts for 36% of these severe injuries, as you interact daily with high-torque motors and complex mechanical systems. Transportation and warehousing also see high rates of injury due to the constant use of conveyors and heavy loading equipment that require frequent mechanical adjustments.

Manufacturing 36%
Transportation & Warehousing 13%
Wholesale Trade 11%
Retail Trade 11%
Other Services 9%
Other 20%

Real cases like yours

Common patterns in these incidents include maintenance tasks where you get caught in pinch points, components failing during testing, or heavy parts shifting unexpectedly during installation. If any of these scenarios sound like what happened to you, an attorney can help you review the specifics of your incident to determine if employer negligence played a role.

Year State Industry Incident summary

Source: OSHA Severe Injury Reports. Narratives are verbatim from filings; identifying details may have been redacted by OSHA.

Frequently asked questions