Employee complaints to the Occupational Safety and Health Administration (OSHA) are a reality for many organizations, even those with robust safety programs. A single complaint can trigger a review or inspection, sometimes catching employers off guard. While not every complaint results in a citation, the process can be stressful, time-consuming, and disruptive if an employer is not prepared. Understanding how complaints arise, which OSHA considers most serious, and how to respond effectively is critical for maintaining compliance and protecting both the organization and its employees.