Authorized vs Affected vs Other Employees Under OSHA 1910.147: Training Requirements That Survive an Audit

Published June 1, 2026 by LOTO Compliance

The three-class structure in 1910.147(c)(7) is the most overlooked piece of the standard. It looks simple. Authorized does lockout. Affected uses the machine. Other walks by. In practice it drives more citations than the technical isolation steps do, because the line between authorized and affected runs through a population every plant has: production operators who occasionally clear jams, unplug debris, change tooling, or reach past a guard. Get the classification wrong and the training records for hundreds of workers fail an audit on a definition issue, not an isolation issue. This piece walks through how 1910.147 splits the workforce, what training each class actually requires, the retraining triggers people miss, and the four documents an inspector cross-references first. It builds on our periodic inspection checklist and the minor servicing exception piece, which is where most misclassifications start.

The Three Classes the Standard Names

1910.147(b) defines an authorized employee as a person who locks out or tags out machines or equipment in order to perform servicing or maintenance on that machine or equipment. The affected employee is one whose job requires them to operate or use a machine or equipment on which servicing or maintenance is being performed under lockout or tagout, or whose job requires them to work in an area in which such servicing or maintenance is being performed.

The third class, other employees, is named in 1910.147(c)(7)(i)(C). It covers workers whose work operations are or may be in an area where energy control procedures may be utilized. They get a different, shorter instruction.

Three things matter about the split. First, the classification is task-based, not title-based. A maintenance technician is authorized when they do maintenance and affected when they walk through a cell where a colleague has locked out a press. A production operator is affected for normal operation and authorized the moment they perform isolation to clear a jam outside the minor-servicing exception. Second, the records have to track the classification per machine, not per person. An employee who is authorized on a stamping press, affected on a robotic weld cell, and other in the warehouse needs three different training records. Third, the standard gives the three classes different training requirements, and inspectors verify the training matches the highest classification an employee holds.

What Authorized Employee Training Has to Cover

1910.147(c)(7)(i)(A) names four points the authorized employee training must cover. The recognition of applicable hazardous energy sources. The type and magnitude of the energy available. The methods and means necessary for energy isolation and control. And the machine-specific energy control procedures the employee will perform.

That last point is the one that distinguishes a real training program from a checkbox one. A generic LOTO video does not satisfy the standard. The training has to be tied to the specific machine-specific energy control procedures the authorized employee will actually run. If your authorized employee population works across twelve press lines, four robot cells, and a hydraulic balance system, every authorized employee on that population needs documented training on the specific procedures they perform. The training record names the procedures, the dates, the trainer, and the demonstrated competency.

The competency piece is where field training is required. Reading the procedure in a classroom is not enough on its own. The authorized employee has to demonstrate the isolation steps on the actual equipment, including the lock application, the stored-energy release, and the verification step. The training certification at 1910.147(c)(7)(iv)(B) is the document that records that demonstration. It names the employee, the date of training, and the trainer. A site that has a stack of attendance sheets but no certification record is exposed.

What Affected Employee Training Looks Like

1910.147(c)(7)(i)(B) is short. Each affected employee shall be instructed in the purpose and use of the energy control procedure. That is the entire scope. The affected employee has to know that a lockout system exists, what it looks like in their work area, what it means when a machine has a lock on it, and the prohibition against attempting to start or operate locked-out equipment.

What affected training does not include: the isolation steps, the verification protocol, the stored-energy release, or the machine-specific procedures. Affected employees do not perform any of those. Training them on isolation steps creates risk because it implies authority they do not have.

The common error: putting every operator through full authorized-employee training because the site decided to standardize. There is no penalty for over-training, but the gap shows up the other direction. A site that runs the full authorized training for everyone and never documents who is authorized on which procedure cannot then prove that the actual authorized employees received machine-specific instruction. The roster has to break out who is authorized, on what, and that person also has to have demonstrated competency on each procedure they perform. The blanket-training approach without the per-procedure record is a gap.

The Other Employee Bucket

The other-employee instruction is the shortest. It exists to prevent unauthorized removal of locks and tags. A walk-through visitor, an office worker passing the plant floor, a quality auditor, a vendor on a maintenance call who is not performing the LOTO themselves, all fit here. The training is brief: do not remove or bypass any lock or tag, do not attempt to start equipment under lockout, and recognize the visual indicators of a locked-out machine.

The record requirement is light but real. A site that has not documented the other-employee instruction has a paperwork citation waiting. The fix is typically a short module in the general site safety orientation, with the sign-in sheet retained.

The Minor Servicing Exception Trap

The single most common reclassification problem is the operator who clears jams, removes debris, or makes minor adjustments. The minor servicing exception at 1910.147(a)(2)(ii) allows certain tasks to be performed without full lockout if they are routine, repetitive, integral to the production cycle, and protected by alternative measures (light curtains, two-hand controls, presence-sensing mats) that provide effective protection.

That exception is narrow. The task has to be inside the normal production cycle. It has to be the alternative measures that protect the worker, not the worker's training or care. The moment the task requires bypassing a guard, taking the machine out of normal operating mode, or reaching past a safeguard that is not actively functioning, the exception is gone and full lockout applies. The operator performing that task is an authorized employee, and the affected-employee training they received does not cover it.

Walking the floor with operations and asking how each jam, clog, or adjustment is actually performed surfaces the reclassification gap fast. The OSHA enforcement record shows fatal events on packaging lines, conveyors, and robotic cells where the operator performing routine cleanup was trained as affected, not authorized, and performed isolation steps they were not qualified to verify. The fix is reclassification, machine-specific procedure training, and documented competency, not adding another video to the affected-employee module. Our conveyor lockout piece details where this shows up most often.

Retraining: It Is Trigger-Based, Not Calendar-Based

1910.147(c)(7)(iv) lists four retraining triggers. A change in job assignment. A change in machines, equipment, or processes that presents a new hazard. A change in energy control procedures. And whenever a periodic inspection under 1910.147(c)(6) reveals, or the employer has reason to believe, that there are deviations from or inadequacies in the employee's knowledge or use of the energy control procedures.

The fourth trigger is the citation magnet. The annual periodic inspection is required to identify deviations in procedure use. When it finds one, the standard requires retraining and a documented certification of that retraining. A site that runs the annual inspection, notes the finding in the file, and never retrains the employee involved is in violation. The fix has to be in the same document set: inspection finding, root cause, retraining action, certification of retraining, all in the file.

None of the four triggers are calendar-based. There is no annual retraining requirement in 1910.147, contrary to widespread practice. Many sites do refresher training annually as good practice, and that is fine. The standard does not require it on a cycle. It requires it on the four triggers, every time, documented every time.

The Documentation Pattern an Inspector Pulls

Four documents do the audit-survival work. They have to be organized, current, and internally consistent. The inspector cross-references them in this order.

The inspector reads the program first, then samples three to five machine-specific procedures, then pulls the training certifications for the authorized employees named on those procedures, then checks the periodic inspection record for the same procedures. Any inconsistency, a procedure with no certified authorized employee, an authorized employee with no machine-specific training certification, a periodic inspection finding with no retraining response, becomes a citation. The full audit-prep service walks through this stack systematically.

The Roster Is the Single Source of Truth

The fix that pulls the documentation together is a roster matrix. Rows are employees. Columns are machine-specific procedures. Cells hold the training date and the classification (authorized, affected, other). The matrix exposes gaps immediately. Procedures with no authorized employees. Authorized employees with no documented procedure-specific training. Operators marked affected who appear on the authorized-task list during walk-throughs.

The matrix also makes retraining administration trivial. A change to a procedure flags every authorized employee in that column. A new hire flags every procedure they will be authorized on. A periodic inspection finding on a procedure flags every authorized employee on that procedure for review. Sites that run this matrix in a spreadsheet, an EHS system, or a purpose-built tool like ECPL's LockStep close the documentation gap that gets cited.

Three Moves to Make This Quarter

1. Walk the floor with operations and document every task currently classified as a minor servicing activity. For each, verify the alternative measures actually provide effective protection during the task. Reclassify the operators performing any task that fails that test, and run machine-specific authorized-employee training for them with documented competency.
2. Audit the training certifications against the machine-specific procedures. Every procedure should list its qualified authorized employees, and every authorized employee on the roster should have a certification record tied to the specific procedures they perform. Gaps on either side go on the corrective action log.
3. Review the last twelve months of periodic inspection findings. Every finding should have a corresponding retraining record under 1910.147(c)(7)(iv) for the employees involved. Missing retraining responses are the most cited training gap on the standard.

If any of those three turns up gaps, that is the call point. ECPL builds the program, writes the machine-specific procedures, runs the authorized and affected employee training, certifies the periodic inspections, and tracks the entire stack inside LockStep. We work out of Chicago, Detroit, and Indianapolis with national travel. The assessment is free.

Frequently Asked Questions

What is the difference between an authorized and an affected employee under 1910.147?

An authorized employee is the worker who actually performs the lockout, applies the lock, releases stored energy, and verifies isolation. An affected employee is anyone whose job involves operating or using the equipment being locked out, but who does not perform the lockout themselves. The authorized employee gets full procedural training. The affected employee gets awareness training only. The same person can be authorized on some machines and affected on others, but the records have to make that clear.

Does an operator who clears a jam on a packaging line need to be classified as authorized?

Yes if they perform energy isolation to clear the jam. The minor servicing exception only applies inside the normal production cycle when alternative measures provide effective protection. Any task that requires bypassing a guard, reaching into the point of operation after isolation, or taking the machine out of its normal operating mode is servicing under 1910.147. The operator performing that task is an authorized employee and must be trained to that level, regardless of job title.

What does affected employee training actually have to cover?

Awareness of the energy control program's purpose and use. The affected employee must recognize when equipment is locked out, understand the prohibition against attempting to start a locked-out machine, and know who to ask if they have questions about isolation status. They do not need to perform isolation, attach locks, or verify de-energization. The training is shorter and the record is shorter, but it is a required record and inspectors do pull it.

Who is an other employee and do they need training?

Other employees are workers in the area whose duties may take them through the workspace but who do not operate or maintain the equipment, such as office staff walking the plant floor or a quality auditor visiting a cell. They get instruction on the prohibition against removing or bypassing locks and tags, but they do not get the affected-employee operational awareness. The training requirement is in 1910.147(c)(7)(i)(C) and it is short. The records still need to exist.

When does retraining have to happen under 1910.147(c)(7)(iv)?

Whenever there is a change in job assignment, a change in machines or processes that creates a new hazard, a change to the energy control procedures, or whenever a periodic inspection reveals deviations from the program or inadequate employee knowledge. Retraining is not on a calendar. It is triggered by events. The most cited gap is the periodic-inspection trigger: the annual inspection finds a procedure deviation, and no retraining is documented in response.

What documentation does an inspector pull first?

The training roster, the certification of training under 1910.147(c)(7)(iv)(B), the annual periodic inspection record under 1910.147(c)(6), and the machine-specific energy control procedures. The inspector cross-references the procedures against the roster: every machine-specific procedure names authorized employees, and every authorized employee on the roster is trained to the procedures they perform. A gap on either side is a citation. Have those four documents organized before an audit, not during it.