Machine operator job description template: machine type, guarding and lockout, noise, and the under-18 rules
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"Machine operator, will train, must be dependable" fills interviews and then empties the floor in the first week. The new hire expected a packaging line and got a 200-ton stamping press, or expected days and got rotating 12s next to a molding machine that never stops. Machine operator is a catch-all title, and the posting has to do the work of narrowing it: what machine, whether the job is run-only or includes setup, the pace, the noise and heat, and the safety rules that come with it. A few of those lines also decide who can legally do the job, because federal child labor rules bar minors from many machine types. Below are the common operator seats, the OSHA and age lines with sources, a copy-ready template, screening and scorecard rows, and common mistakes. For the call itself, use machine operator screening questions.
Not legal advice. The OSHA and child labor points below were checked against OSHA's standards and the Department of Labor as of October 2026. State OSHA plans and state child labor laws can add requirements.
Name the machine and the job on it
| Seat | What the shift looks like | Line the posting needs |
|---|---|---|
| Press operator (stamping, punching, brake press) | Loading blanks, two-hand controls or light curtains, die changes by setup staff | 18 or older (HO 8), guarding method used, hearing protection |
| CNC machine operator (run-only) | Loading and unloading parts, running a proven program, checking dimensions, swapping inserts | Whether operators touch offsets or programs, and which gauges they use |
| Injection molding or extrusion operator | Removing and trimming parts, packing, watching for defects, heat near the machine | Cycle pace, heat, and whether operators clear jams or call a technician |
| Packaging or filling machine operator | Feeding materials, clearing jams, changeovers between products, line speed | Changeover duties, sanitation duties, and whether the line is food or pharma |
| Woodworking or panel saw operator | Cutting, edge banding, routing, dust and noise | 18 or older (HO 5 and HO 14), dust control and hearing protection |
Then decide with the supervisor: run-only or setup, who clears jams, the expected pace or cycle time, the shift pattern, and the heaviest thing the operator lifts. If the job is mostly CNC setup and offsets, it is closer to a machinist role; see CNC machinist screening questions.
Guarding, lockout, noise and age: the legal lines
Machine guarding. OSHA requires one or more methods of machine guarding to protect the operator and other employees from hazards such as the point of operation, ingoing nip points, rotating parts, and flying chips and sparks; barrier guards, two-hand tripping devices and electronic safety devices are examples (29 CFR 1910.212(a)(1)). The posting does not need to cite this, but "you will never be asked to bypass a guard" is a line experienced operators notice.
Lockout/tagout. Authorized employees, who lock out equipment, must be trained to recognize hazardous energy sources and how to isolate and control them; affected employees must be instructed in the purpose and use of the procedure (29 CFR 1910.147(c)(7)). Minor servicing during normal production is covered only by an exception: the task must be routine, repetitive and integral to production, with alternative measures that give effective protection. State whether operators clear jams under lockout or call maintenance.
Noise. At an 8-hour time-weighted average of 85 dBA, employers must run a hearing conservation program, including a baseline audiogram within six months of first exposure and hearing protectors at no cost (29 CFR 1910.95).
Age. Federal child labor rules bar 14- and 15-year-olds from operating or tending power-driven machinery other than office machines and from working in workrooms where goods are manufactured. For 16- and 17-year-olds, Hazardous Occupations Orders bar operating power-driven woodworking machines (HO 5), metal-forming, punching and shearing machines (HO 8), balers, compactors and paper-products machines (HO 12), and circular saws, band saws and guillotine shears (HO 14), with a limited exemption for apprentices and student-learners (DOL Fact Sheet #43). For most machine operator jobs, "must be 18 or older" is the right line. If you run a student-learner program, see hiring minors and work permits.
The machine operator job description template
Machine Operator — [Press / CNC / Molding / Packaging / Saw],
[1st / 2nd / 3rd / Rotating 12s]
[Company], [street area or nearest town, state]
Pay: $[min]–$[max] per hour, plus [shift differential, attendance
or production bonus with conditions]. [Benefits summary, if
required.]
SUMMARY
You will run [machine type and size] making [product] in a
[N]-person plant. This is a [run-only / run-and-setup] role on
[shift days and hours]. You will report to the [shift supervisor].
WHAT YOU WILL DO
- Load, run and unload [machine] at [pace or cycle, as an
estimate].
- Check parts against [gauges / visual standards] every [N]
pieces and record results.
- Clear jams [under lockout / by calling maintenance], following
our procedure.
- [Change over between products / swap inserts / adjust offsets
within limits.]
- Keep guards in place and report damaged guards right away.
- Keep the work area clean and report injuries and near-misses.
YOU MUST HAVE
- At least 18 years old.
- [Experience running [machine type] / No experience needed; we
train on the job.]
- Ability to use [calipers / go-no-go gauges] after training.
- Availability for [shift and overtime pattern].
- Ability to [stand for the shift / lift N pounds repeatedly], with
or without reasonable accommodation.
NICE TO HAVE
- Setup or changeover experience.
- [Forklift or pallet jack] experience.
If you meet the must-haves and none of these, please apply.
ENVIRONMENT AND SAFETY
- Hearing protection, safety glasses and [gloves / steel toes]
required; we provide [list].
- [Temperature, dust, noise levels as plain description.]
FIXED CONDITIONS
- Offers are subject to [checks] as permitted by law.
[EEO STATEMENT]
To request an adjustment to apply or interview, contact [contact].Pay and EEO
Post the hourly range and every differential. The BLS Occupational Outlook Handbook profile for metal and plastic machine workers (last modified August 27, 2026) publishes pay data and notes that operator trainees usually begin by watching and helping experienced workers; this page does not quote figures. Close with an EEO statement covering the characteristics the EEOC lists, and keep hearing or vision questions out of the screen: the ADA allows medical examinations only after a conditional offer (42 U.S.C. 12112(d)).
From must-haves to screening questions and scorecard rows
| Must-have | Screening question | Scorecard competency | Evidence of a strong answer |
|---|---|---|---|
| Age 18 or older | "This role runs presses, which federal rules limit to workers 18 and older. Are you 18 or older?" | Not scored | Knockout confirmed |
| Machine experience | "Which machines have you run, for how long, and did you set them up or only run them?" | Equipment experience | Names machine types and sizes, separates run from setup honestly |
| Guarding and jams | "Your machine jams every few cycles and a coworker shows you a quicker way that skips the guard. What do you do?" | Safety judgment | Refuses, follows the jam procedure, tells the lead the machine keeps jamming |
| Quality checks | "How did you know a part was bad on your last job, and what did you do with it?" | Quality awareness | Describes the check, separates bad parts, tells the lead, checks the parts made before |
| Pace and reliability | "This line runs about [N] parts an hour (an estimate) for 10-hour shifts. Have you worked at a pace like that?" | Work pace | Comparable pace and shift length, or a frank answer about adjusting |
| Shift availability | "The schedule is 2-2-3 rotating 12s, nights. Does that work?" | Not scored | Knockout confirmed |
For staffing orders that mix machine work with packing and assembly, use the light industrial screening questions. For the onsite stage, the interview guide for manufacturing roles covers a short floor walk and a gauge task.
Common mistakes in machine operator job descriptions
No machine named
A packaging operator and a press operator are different hires. Name the machine and the tonnage or line speed.
Leaving age out of a hazardous-machine role
If the job involves a press, saw, baler or woodworking machine, minors cannot do it under federal rules. Put the 18-plus line in the must-haves.
"Must be able to work in a fast-paced environment"
Give the pace as a number labeled as an estimate. It is more honest and filters better.
Silence on noise, heat and PPE
Applicants who quit in week one often cite conditions nobody mentioned. State them and what you provide.
Before you publish
- Machine type, run-only or setup, product and pace are in the summary.
- The 18-plus line is present for hazardous machines.
- Jam-clearing, guarding and PPE lines match the floor.
- Pay, shift pattern, EEO statement and accommodation contact are present.
Questions people ask
Can a 16- or 17-year-old work as a machine operator?
It depends on the machine. Federal Hazardous Occupations Orders bar workers under 18 from operating several machine types, including power-driven woodworking machines (HO 5), metal-forming, punching and shearing machines (HO 8), balers and compactors (HO 12), and certain saws (HO 14), with limited exemptions for registered apprentices and student-learners. Workers aged 14 and 15 may not operate power-driven machinery other than office machines or work in manufacturing workrooms. States can be stricter.
Does a machine operator need lockout/tagout training?
OSHA distinguishes authorized employees, who lock out machines and must be trained on hazardous energy sources and how to control them, from affected employees, who work on machines that are locked out and must be instructed in the purpose and use of the procedure. Most operators are at least affected employees. Say in the posting which role your operators play.
Should the posting mention noise?
Yes, if the area is loud. When exposure reaches an 8-hour time-weighted average of 85 decibels, OSHA requires a hearing conservation program, including audiometric testing and hearing protectors at no cost to employees. Saying 'hearing protection required; we provide it' tells applicants what the floor is like.
What is the difference between a machine operator and a setup operator?
An operator typically loads, runs, monitors and unloads a machine that someone else has set up, and checks parts. A setup operator changes tooling, adjusts settings and proves out the first part. BLS notes that operator trainees usually start by watching and helping experienced workers. Name which one you need, because the pay and experience differ.