OSHA machine guarding requirements under 29 CFR 1910.212 require every general industry employer to guard any machine that could injure a worker through moving parts, points of operation, pinch points, or flying debris, unless a more specific OSHA standard already covers that equipment.1Occupational Safety and Health Administration. 29 CFR 1910.212 – General Requirements for All Machines The guard has to make contact with the hazard physically impossible during the operating cycle, and it has to stay in place, in working order, and in use.
Which Machines Are Covered
1910.212 is OSHA’s catch-all machine guarding rule. It applies across general industry to any equipment that creates hazards from rotating parts, points of operation, pinch points, or debris and isn’t already governed by a dedicated standard.1Occupational Safety and Health Administration. 29 CFR 1910.212 – General Requirements for All Machines Mechanical power presses have their own detailed rules under 1910.217. Woodworking machinery is covered by 1910.213. When a machine doesn’t fit into one of those specialized rules, 1910.212 fills the gap, which is why it appears so often on inspection reports.
Guarding the Point of Operation
The point of operation is where the machine acts on the material: cutting, shaping, boring, stamping, bending. That’s where the worst injuries happen. Any machine whose operation exposes a worker to injury at the point of operation must be guarded there, and the guard must make it physically impossible for the operator to reach into the danger zone during the operating cycle.1Occupational Safety and Health Administration. 29 CFR 1910.212 – General Requirements for All Machines
If no specific OSHA standard exists for a particular machine, the employer has to design a solution that achieves that result. A generic off-the-shelf guard rarely fits every machine perfectly, and OSHA expects the guard to account for the specific movements and clearances of the equipment in front of you.
The regulation names several machines that almost always require point-of-operation guarding:1Occupational Safety and Health Administration. 29 CFR 1910.212 – General Requirements for All Machines
- Guillotine cutters
- Shears and alligator shears
- Power presses
- Milling machines
- Power saws
- Jointers
- Portable power tools
- Forming rolls and calenders
The list is not exhaustive. The regulation uses the word “some,” which signals that other machines with similar hazards need guarding even when they aren’t named.
Acceptable Guarding Methods
The standard doesn’t dictate one correct method. It lists acceptable approaches and lets the employer choose one that fits the equipment and the work.1Occupational Safety and Health Administration. 29 CFR 1910.212 – General Requirements for All Machines The three main categories are:
- Barrier guards. Physical covers or enclosures that block access to moving parts. These are the most common, ranging from metal plates bolted over gears to adjustable shields on saws.
- Electronic safety devices. Light curtains, laser scanners, and presence-sensing systems that stop the machine when a person enters the hazard zone.
- Two-hand controls. Devices that require the operator to press two buttons at once to start the cycle, keeping both hands away from the danger zone.
Whatever method you pick, the guard itself can’t create new hazards. Sharp edges, blocked sightlines, or a guard so awkward that workers disable it will all draw citations. Inspectors look closely at whether guards are firmly attached and not easily removed or bypassed. A guard that technically exists but sits in a corner because it’s unworkable will still be cited.
Interlocks on Revolving Enclosed Equipment
For revolving drums, barrels, and containers, the regulation requires an interlocked enclosure. The equipment must be unable to spin unless the guard is in place.2eCFR. 29 CFR 1910.212 – General Requirements for All Machines A warning light or alarm doesn’t satisfy this. The interlock has to physically prevent operation.
Guard Opening Sizes
A guard with an opening large enough for a hand to slip through provides no real protection. 1910.212 itself doesn’t include an opening-size table, but the power press standard at 1910.217 does, and employers guarding equipment under 1910.212 often use that table as engineering guidance. It scales the maximum permitted opening to the distance between the guard and the hazard: openings can be no wider than a quarter inch when the guard sits a half inch to an inch and a half from the point of operation, rising to about two inches at distances of 17.5 to 31.5 inches.
Fan Blades, Flying Debris, and Anchoring
Three other specific requirements sit inside the same regulation.
When the outer edge of a fan’s blades is less than seven feet above the floor or working level, the blades have to be guarded, and the guard openings can’t exceed half an inch.2eCFR. 29 CFR 1910.212 – General Requirements for All Machines If guarding is impractical because workers on mobile equipment can reach the blades at various heights, lock out and tag out the fan before anyone works nearby.
Guarding also has to protect against flying chips, sparks, and other projectiles produced during cutting, grinding, or similar work.1Occupational Safety and Health Administration. 29 CFR 1910.212 – General Requirements for All Machines A grinding wheel that throws metal fragments is as much a violation as an unshielded gear. Transparent shields and deflectors are typical solutions.
Any machine designed for a fixed location must be securely anchored so it can’t shift from vibration or centrifugal force.1Occupational Safety and Health Administration. 29 CFR 1910.212 – General Requirements for All Machines Even a few inches of drift can sever electrical connections, close clearances workers depend on, or strike someone nearby. Inspectors check for loose fasteners, cracked concrete around anchor points, and signs the machine has moved.
When Lockout/Tagout Takes Over
1910.212 protects workers during normal production. When someone has to remove a guard, reach into the point of operation, or work on stored energy, the lockout/tagout standard at 1910.147 takes over.3eCFR. 29 CFR 1910.147 – The Control of Hazardous Energy (Lockout/Tagout) Minor tool changes and adjustments that are routine and integral to production are exempt, but only if alternative protective measures are in place.
OSHA inspectors regularly cite both standards on the same visit when they find a guard removed and no lockout procedure followed. Good guards will not save an employer from a citation if the maintenance side of the operation has no lockout program.
Training and Inspection
Guards only work if the people around them know why they’re there. 1910.212 doesn’t lay out a training curriculum, but OSHA guidance identifies what effective training covers:4Occupational Safety and Health Administration. Machine Guarding Overview
- Why each guard exists and the specific hazard it addresses
- How the fixed, interlocking, adjustable, or presence-sensing guards at the facility work
- Past injuries and near-misses on the site’s machines, and how to prevent recurrence
- Who to contact when a guard is missing, damaged, or malfunctioning, with the rule that operating a machine without a functioning guard is never acceptable
- When and how to shut down a machine and lock out its energy source before working on it
If a guard is damaged or stops functioning, the operator should shut the machine down immediately and have a qualified person inspect it before production resumes.
The regulation doesn’t set an inspection frequency or require particular records, but OSHA publishes a self-inspection checklist covering the questions an employer should be asking regularly:5Occupational Safety and Health Administration. Machine Guarding eTool – Appendix G
- Do the guards prevent hands, arms, and other body parts from contacting moving parts?
- Are guards firmly secured and not easily removable?
- Do guards prevent objects from falling into moving parts?
- Can the machine be lubricated without removing the guard?
- Do guards allow comfortable, safe operation without forcing awkward positions?
- Is there evidence of tampering or removal?
- Is there a system for shutting down and locking out energy before guards are removed for maintenance?
A written log of inspections, findings, and corrective actions is not required, but employers who keep one have an easier time showing reasonable diligence when a citation is challenged.
Penalties
OSHA classifies most machine guarding violations as “serious,” meaning the hazard could cause death or significant physical harm. As of the adjustment effective January 15, 2025, a serious violation carries a maximum penalty of $16,550 per instance. Willful or repeated violations can reach $165,514 per violation.6Occupational Safety and Health Administration. OSHA Penalties These figures adjust for inflation each January.
Penalties are per violation, not per inspection. Five unguarded machines are five separate violations, each with its own penalty. Failing to fix the problem after being cited adds a daily penalty of up to $16,550 for every day past the abatement deadline.6Occupational Safety and Health Administration. OSHA Penalties Exposure builds quickly on floors with multiple machines.
Contesting a Citation
Employers who disagree with a citation, the penalty, or the abatement deadline have 15 working days from receipt of the citation to file a written notice of contest with the OSHA Area Director. Working days exclude weekends and federal holidays. Oral objections don’t count. The written notice has to identify exactly what is being contested: the citation, the penalty, the abatement date, or some combination.7Occupational Safety and Health Administration. Chapter 7 – OSHA Enforcement Directives
Anything not contested becomes final. Uncontested items must still be corrected by the original abatement date, and the corresponding penalties are due within 15 days of notification. Miss the 15-working-day window entirely and the citation becomes a final order with no further right of challenge. An informal conference with the Area Director before the deadline is also available and sometimes produces a negotiated resolution without a hearing.