Why Machine Guarding and Lockout/Tagout Are the Most Cited OSHA Violations

Each year, OSHA releases its list of the most frequently cited standards, and consistently near the top are Machine guarding and Lock out/tag out (LOTO) violations. These citations are not minor paperwork errors. They are often tied to serious injuries, amputations, or fatalities resulting from uncontrolled hazardous energy or exposure to moving machine parts.

Understanding why these areas continue to generate citations is critical for employers seeking to reduce risk and maintain compliance.

Machine Guarding: A Persistent Compliance Gap

Machine guarding, sometimes referred to as Machinery guarding, is required under Section 212 OSHA’s general industry standards to protect employees from hazards such as rotating shafts, pinch points, in-running nip points, flying debris, and sparks. OSHA requires that “one or more methods of machine guarding shall be provided” to prevent operator contact with hazardous moving parts. OSHA’s prioritization of this can be seen from them implementing a National Emphasis Program on Amputations, which includes an increase in enforcement actions.

Two factory engineers in orange hard hats inspect and adjust a large industrial machine with tools and a clipboard.

Despite this clear requirement, many facilities operate under the misconception that equipment purchased from an original equipment manufacturer is automatically compliant. It is sometimes the case that the manufacturer or vendor themselves state that the equipment is “OSHA Compliant”. In reality, OSHA places responsibility for safeguarding squarely on the employer. A machine that “came that way” does not relieve the facility of liability if it lacks adequate protection.

Common deficiencies include missing or removable guards, bypassed safety devices, improperly designed safeguarding, or failure to conduct a formal risk assessment. In some cases, a single missing guard can result in an injury or citation; particularly if employees are exposed to hazardous motion during operation or maintenance.

Lock Out Tag Out (LOTO): Hazardous Energy Control Failures

Closely related to machine guarding is OSHA’s Lockout/Tagout standard, 29 CFR 1910.147, which governs the control of hazardous energy during servicing and maintenance. Failure to properly isolate equipment can result in unexpected startup or the release of stored energy — leading to catastrophic injuries.

Electrical control panel with red, yellow, and green indicator lights and a DANGER do not operate lockout tag.

Many LOTO violations stem from incomplete written procedures, lack of machine-specific instructions, failure to verify a “zero energy state”, or failure to ensure the procedures are accurate during the required annual LOTO procedure audit. Facilities may assume that shutting off electrical power is sufficient, overlooking pneumatic, hydraulic, mechanical, chemical, or gravitational energy sources.

Training deficiencies are also common. OSHA requires training for authorized employees (those who have a lock as well as those who perform lockout), affected employees (those that work near the equipment included in lockout), and other workers who may be exposed to equipment under maintenance. Without thorough and recurring training, even well-written LOTO procedures can fail in practice.

Why These Violations Persist

Both Machine Guarding and LOTO requirements demand more than documentation. They require regular reviews or audits, engineering controls, employee involvement, and proper training. Safeguards must be effective, not simply present. Procedures must be followed, not just pencil-whipped and filed away.

These standards remain highly cited because they involve daily interaction between workers and equipment. When production pressures increase or safety culture weakens, shortcuts can occur and OSHA inspections frequently uncover those gaps. When these programs, policies, and procedures fail people get seriously hurt or killed.

Facilities that proactively assess machinery risks, validate LOTO procedures annually, and ensure safeguarding aligns with OSHA and consensus standards are better positioned to reduce both citations and injury risk.

If you are unsure whether your Machine Guarding or Lockout/Tagout (LOTO) procedures meet OSHA expectations, a proactive review can identify gaps before they lead to citations or injuries. Conversion Technology Inc. (CTI) works with facilities to evaluate safeguarding and energy control programs to help reduce risk and strengthen compliance. CTI is able to conduct machine guarding audits to identify any safety or compliance gaps and provide recommendations for safeguarding and risk reduction solutions to minimize the risk to personnel. We are also able to work with on-site or 3rd party fabrication teams to design, fabricate, and install safeguards that minimize the risk to personnel, comply with regulatory requirements, and do not impede on operation of the equipment.

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