You just got a letter that says a workplace safety complaint was filed, or you are thinking about filing one after being hurt on the job. An OSHA complaint is a report to the Occupational Safety and Health Administration alleging unsafe or unhealthy working conditions, lack of required training or protective gear, exposure to dangerous substances, or retaliation for raising safety concerns. A complaint can be filed by a worker, a representative, or sometimes anonymously, and it may lead to an inspection, citations, or orders to fix hazards.

Practically, this can matter fast after a crash, fall, machinery injury, or toxic exposure. A complaint can create a paper trail showing the employer knew about a hazard and failed to correct it. That record may help support a workers' compensation claim, a retaliation claim, or a third-party personal injury case if someone other than the employer caused or contributed to the harm. But an OSHA complaint is not the same as a lawsuit, and it does not automatically pay medical bills or lost wages.

There are traps. Federal OSHA retaliation complaints under Section 11(c) generally must be filed within 30 days of the retaliation. In Massachusetts, public-sector workplace safety issues are often handled through the Department of Labor Standards rather than federal OSHA. If there is also an injury claim, Massachusetts generally gives you 3 years to file a personal injury claim, and the state's modified comparative fault rule bars recovery if you are more than 50 percent at fault.