OSHA Lockout/Tagout (LOTO): Compliance Requirements & Energy Control
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The Control of Hazardous Energy standard — 29 CFR 1910.147, universally known as "lockout/tagout" or LOTO — exists because an estimated 120 fatalities and 50,000 injuries occur annually in the United States from the unexpected energization or startup of machines and equipment during servicing and maintenance. OSHA reports that proper lockout/tagout procedures prevent an estimated 120 fatalities and 50,000 injuries each year, and the standard consistently ranks among the Top 10 Most Cited standards with 2,554 citations in fiscal year 2024. Manufacturing, food processing, and automotive repair facilities account for the majority of LOTO citations, though the standard applies broadly across general industry to any employer whose workers perform servicing or maintenance on machines with hazardous energy sources.
LOTO violations are disproportionately fatal compared to other OSHA standards. While fall protection has more total citations, lockout/tagout failures tend to produce severe injuries — amputations, crush injuries, electrocutions, and deaths — because the underlying hazard is uncontrolled energy release. A machine that starts unexpectedly while a worker's hand is positioned at the point of operation does not produce a bruise or a sprain. It produces an amputation or a fatality. This is why OSHA classifies most LOTO violations as "serious" or "willful" rather than "other-than-serious."
The standard's requirements are detailed and documentation-heavy. Employers must develop machine-specific energy control procedures, train three categories of workers (authorized, affected, and other employees), conduct annual periodic inspections of each procedure, and maintain records of all training and inspections. Retraining is required whenever job assignments change, machines are modified, or periodic inspections reveal procedural deviations. The standard applies to seven categories of hazardous energy: electrical, mechanical, hydraulic, pneumatic, chemical, thermal, and gravitational. Each energy source requires its own isolation method, lockout device, and verification procedure. A Job Safety Analysis for lockout/tagout tasks maps directly to the "machine-specific energy control procedure" that 1910.147 requires — making the JSA both a compliance document and a practical field reference.
Disclaimer
This content is provided for general informational and educational purposes only. It is not a substitute for a site-specific Job Safety Analysis conducted by a qualified safety professional familiar with your workplace conditions, equipment, and personnel. OSHA citations, BLS statistics, and hazard controls referenced here may not reflect the most current standards or apply to your specific situation. Always consult current OSHA regulations, manufacturer guidelines, and a competent person before beginning work. Health & Safety Systems LLC assumes no liability for actions taken based on this content.
Applicable OSHA Standards
Federal OSHA standards relevant to this compliance area, and how documented JSAs support each requirement.
29 CFR 1910.147
Control of Hazardous Energy (Lockout/Tagout)
The primary OSHA standard for controlling hazardous energy during servicing and maintenance of machines and equipment. Covers the development of energy control procedures, lockout/tagout devices, training, periodic inspections, and documentation requirements. Applies to general industry — construction has parallel requirements under 29 CFR 1926.417 (Lockout and Tagging of Circuits).
How a JSA Supports Compliance
A JSA for lockout/tagout tasks is effectively a machine-specific energy control procedure. Each step captures the isolation point, energy type, lockout device, and verification method — which is exactly what 1910.147(c)(4) requires. Using JSABuilder to create LOTO JSAs produces the documentation that OSHA expects to see.
29 CFR 1910.147(c)(4)
Energy Control Procedures
Requires documented procedures for each machine or piece of equipment that include: (1) a specific statement of intended use, (2) specific procedural steps for shutting down, isolating, blocking, and securing machines, (3) steps for placement, removal, and transfer of lockout/tagout devices, and (4) requirements for testing to verify effectiveness of energy control measures.
How a JSA Supports Compliance
The step-by-step format of a JSA directly maps to the procedural steps that 1910.147(c)(4) mandates. Each JSA step can capture the specific energy source, isolation device, lockout point location, and verification method for a given machine.
29 CFR 1910.147(c)(6)
Periodic Inspections
Requires that an authorized employee (other than the one using the procedure) conduct an annual inspection of each energy control procedure. The inspection must include a review of employee responsibilities and must be documented with the machine identified, date, employees included, and the person conducting the inspection.
How a JSA Supports Compliance
The annual JSA review process aligns directly with the periodic inspection requirement. When LOTO JSAs are reviewed annually by a different authorized employee and documented, the same review satisfies both the JSA update cycle and the 1910.147(c)(6) periodic inspection mandate.
29 CFR 1910.147(c)(7)
Training and Communication
Requires training for three categories of employees: authorized employees (who perform LOTO), affected employees (who operate machines being locked out), and other employees (who work in areas where LOTO is used). Training must cover the purpose and function of the energy control program, recognition of applicable hazardous energy sources, and the specific procedures for each type of machine.
How a JSA Supports Compliance
LOTO JSAs serve as the training content for both initial and refresher training. Authorized employees train on the specific steps, affected employees review the procedures to understand why and when machines will be locked out, and the documented training record satisfies 1910.147(c)(7)(iv).
29 CFR 1910.333(b)
Working on or Near Exposed Energized Parts (Electrical)
Requires de-energization and lockout/tagout of electrical circuits and equipment before work begins, unless the employer can demonstrate that de-energization introduces additional or increased hazards or is infeasible due to equipment design or operational limitations. Works in conjunction with 1910.147 for electrical energy control.
How a JSA Supports Compliance
Electrical LOTO JSAs capture the specific circuit identification, breaker location, voltage verification steps, and test equipment requirements that 1910.333(b) demands. The JSA documents the "feasibility" determination if live work is being performed.
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Start Free TrialOSHA Penalty Amounts
Current maximum OSHA penalty amounts (2024 rates, adjusted annually for inflation).
Serious
$16,131 per violation
Willful
$161,323 per violation
Repeat
$161,323 per violation
Failure to Abate
$16,131 per day beyond abatement date
LOTO violations frequently result in per-instance citations when multiple machines lack documented procedures or multiple employees lack required training. A single facility inspection can produce dozens of individual LOTO citations — one per machine without a procedure, one per untrained employee — rapidly accumulating penalties into six or seven figures.
Compliance Checklist
Key actions to maintain compliance with the standards covered on this page.
Frequently Asked Questions
What is the OSHA lockout/tagout standard?
29 CFR 1910.147, the Control of Hazardous Energy standard, requires employers to establish and enforce energy control procedures to prevent the unexpected startup or release of stored energy during servicing and maintenance of machines and equipment. The standard applies to general industry and covers all types of energy: electrical, mechanical, hydraulic, pneumatic, chemical, thermal, and gravitational. It requires written procedures, employee training, lockout/tagout devices, periodic inspections, and documentation.
What are the six steps of lockout/tagout?
OSHA describes the lockout/tagout sequence in six steps: (1) Preparation — identify all energy sources, types, and magnitudes. (2) Shutdown — notify affected employees and shut down the machine using normal stopping procedures. (3) Isolation — operate all energy-isolating devices (breakers, valves, disconnects) to isolate the machine from its energy sources. (4) Lockout/tagout — apply lockout or tagout devices to each energy-isolating device. (5) Stored energy — release or restrain all residual or stored energy (capacitors, springs, elevated components, pressurized systems). (6) Verification — attempt to start the machine using normal operating controls to confirm energy isolation, then return controls to the off position.
When is lockout/tagout not required?
OSHA 1910.147 does not apply in four situations: (1) work on cord-and-plug connected equipment where unplugging the cord is under the exclusive control of the employee performing the servicing, (2) hot tap operations on pressurized pipelines where continuity of service is essential and documented procedures exist, (3) minor tool changes and adjustments that are routine, repetitive, and integral to production — provided alternative protection is equally effective, and (4) normal production operations (the standard only covers servicing and maintenance). These exceptions are narrowly interpreted by OSHA, and employers claiming an exception bear the burden of proof.
What training does OSHA require for lockout/tagout?
OSHA requires training for three categories: Authorized employees — those who apply lockout/tagout devices — must be trained on hazardous energy recognition, energy types and magnitudes in the workplace, and the methods and means for energy isolation and control. Affected employees — those who operate machines being locked out — must be trained on the purpose and use of the energy control program and on the prohibition against restarting locked-out equipment. Other employees — those who work in areas where LOTO is used — must receive instruction about the procedure and the prohibition against removing lockout devices. Retraining is required whenever procedures change, periodic inspections reveal deficiencies, or the employer has reason to believe employee knowledge is inadequate.
How does a JSA support lockout/tagout compliance?
A JSA for lockout/tagout tasks functions as the machine-specific energy control procedure that 29 CFR 1910.147(c)(4) requires. Each step in the JSA captures the specific action (shutdown, isolate, lock, verify), the associated hazards (stored electrical energy, pressurized hydraulic lines, spring-loaded mechanisms), and the controls (specific breaker location, valve identification, verification method). The JSA format also supports the periodic inspection requirement — the annual review becomes both a JSA update and a 1910.147(c)(6) periodic inspection when documented properly.