Machine operator job description, by the machine you run
A machine operator job description has to say which machine. Setup, tending and CNC work are different jobs with different requirements. This template gives you the shared core duties, a variant table for 5 machine families, the requirements worth keeping, and the working conditions most postings leave out.
What a machine operator does
Machine operator A machine operator job description covers a worker who runs production equipment that cuts, shapes, forms, fills or packages material. It is a job title, not a single occupation: O*NET lists it under more than 20 separate production occupations.
BLS draws the line by production phase. Setters prepare the machine beforehand and do test runs. Operators and tenders monitor the machinery while it runs. A posting that asks for both is describing a different job than the one you are filling.
Machine operator duties and responsibilities
- Set up and adjust the machine according to blueprints and job specifications
- Monitor machine status through the run to confirm it is working properly
- Adjust settings for temperature, cycle time, speed and feed as required
- Measure, test and inspect finished workpieces against the print
- Load material, remove finished pieces and separate anything rejected
- Stop or reset the machine on a malfunction, clear jams, and report it
- Keep the work area, tooling and machine clean and in running order
- Record counts, scrap and downtime on the shift paperwork or terminal
5 kinds of machine operator, and what changes between them
| Machine family | What the operator actually does | The requirement that matters | What you can train |
|---|---|---|---|
| CNC and machining | Reads the print and program spec, mounts and aligns tooling, runs the cycle, measures to tolerance with precision instruments. | Reading a drawing, and using calipers and micrometers on a first article. | Your specific controller, your fixturing, your offsets and your part families. |
| Packaging and filling | Tends the line, verifies weight and fill against spec, labels and codes cartons, clears jams, pulls rejects. | Attention to a repeating standard at line speed, and clean changeover discipline. | The machine itself, label and lot coding, and your changeover sequence. |
| Moulding and extruding | Loads resin or stock, holds temperature and cycle time, watches for short shots and dimensional drift, trims and inspects. | Noticing a slow drift in a part before the bin fills with scrap. | Resin handling, mould changes, and reading your process sheet. |
| Press, punch and forming | Loads blanks, cycles the press, checks first and in-process pieces, changes dies under supervision. | Absolute guarding and two-hand-control discipline, without exception. | Die setting, shut height and feed adjustment, over months not days. |
| Woodworking and paper goods | Feeds stock, watches grain, thickness and registration, clears the machine, checks finished size and surface. | Steady hand feed and awareness of what the machine will do to bad stock. | Blade and knife changes, dust collection, and your finishing standard. |
Machine operator job description template
MACHINE OPERATOR at [company], [city, state] [Shift, e.g. 1st shift, Monday to Friday, 6am to 2:30pm] [Pay range, per hour] plus [overtime, shift differential, benefits] ABOUT THE ROLE You will run [machine type, e.g. a 3-axis CNC mill / a rotary filler / a 150-ton press] producing [what you make]. You report to the [shift supervisor]. WHAT YOU WILL DO - Set up and adjust the machine to the job specification and the print - Monitor the run and hold [speed, temperature, cycle time] within spec - Measure and inspect first-article and in-process pieces using [instruments] - Clear jams, change [tooling / dies / knives] and report malfunctions - Record counts, scrap and downtime, and keep the area clean WHAT WE REQUIRE - High school diploma or equivalent - Able to read [a work order / a basic drawing] and follow a written spec - Comfortable standing for a full shift and handling [weight] repeatedly - Wears the required PPE every shift without being asked WHAT WE WILL TRAIN - Our controls, tooling and changeover sequence - [Measurement instruments], quality paperwork and our escalation rules - [Forklift or pallet jack, if the job includes it] WORKING CONDITIONS Production floor. Safety shoes, glasses, gloves and hearing protection daily. Noise, [temperature] and moving equipment nearby. [Lifting and standing requirements, stated plainly.]
Before you post
EEOC guidance says a written job description prepared before advertising or interviewing will be considered as evidence of a job's essential functions. For a production role, that is the standing, lifting and handling lines. Write them literally.
Machine operator, machinist or setter: which title are you posting?
The title decides the pay you will have to offer. BLS put 2025 median pay for metal and plastic machine workers at 47,700 dollars a year, and for machinists at 58,750. If your job description of a machine operator actually describes setup, tooling and tolerance work, you are advertising a machinist at operator money.
The other half of the decision is setter versus tender. BLS describes setters as preparing the machine and doing test runs before production, and operators and tenders as monitoring it during production. Decide which one you are hiring, say so in the first line, and put the other set of duties under what you will train.
Writing the posting
Do
- Name the machine, the controller and the material in the first 2 lines
- Put precision and quality discipline above years of experience
- State the real schedule; O*NET reports 87 percent on a set routine
- Give a location and a pay range, because a reader filters on both
- Separate what you require from what you will teach on the floor
Do not
- Asking for setup and programming skill in a job that is tending
- Listing years of experience where BLS records none as typical
- One generic duty list reused for the mill and the packaging line
- A requirements list that is really a wish list nobody will meet
CNC machine operator job description
A CNC operator job description is a narrower thing than the generic posting above. O*NET defines the occupation as operating computer-controlled tools, machines or robots to machine or process parts made of metal, plastic, wood, stone or other materials, and notes the operator may also set up and maintain the equipment.
The expensive mistake in a CNC machine operator job description is conflating the operator with the programmer. BLS separates them: operators run the CNC equipment on workpieces, while programmers write the programs that control the machining, and programmers typically need postsecondary training. Asking for G-code authoring turns an operator posting into a programmer posting, at programmer pay.
CNC operator duties, in the order they happen
- Review the print and the program spec Read the blueprint or program specification to determine machine operations, sequencing, finished workpiece dimensions and the numerical control sequence. Confirm revision level before touching the machine. A superseded print is the cheapest scrap you will ever make.
- Mount, align and secure the setup Mount, install, align and secure tools, attachments, fixtures and the workpiece on the machine, using hand tools and precision measuring instruments.
- Set up and run the cycle Set up and operate the computer-controlled machine or robot to perform one or more machine functions on the metal or plastic workpiece.
- Measure the first article, then keep checking Measure dimensions of finished workpieces to confirm conformance to specifications, using precision measuring instruments, templates and fixtures. This is the step that separates a CNC operator from a button pusher, and it is the one to probe in a screen.
- Stop, change and escalate Stop the machine to remove finished work or to change tooling, setup or workpiece placement, according to the required machining sequence. Report anything outside the process sheet.
Requirements: what to require, what to train
- Require: high school diploma or equivalent, which is the BLS entry standard
- Require: reading a work order or drawing and following a written spec
- Require: the physical demands you actually have, stated plainly
- Require: wearing PPE every shift, which O*NET records at 99 percent daily
- Train: your controller, your fixturing, your offsets and your part families
- Train: measurement instruments, because BLS records moderate-term on-the-job training
- Train: quality paperwork, escalation rules and changeover sequence
- Decide: prior related experience, which BLS lists as none typically required
- Decide: a named industry credential, if you will really reject without it
Safety belongs in the posting
O*NET records 99 percent of incumbents in PPE daily and 60 percent exposed to hazardous equipment daily. If the job includes a forklift, note that 29 CFR 1910.178(l) puts the training and evaluation duty on you, not on a card from a past employer.
The posting reaches people who are looking
Advanced filters split into what the person knows and what their current employer runs.
BLS counts 963,000 metal and plastic machine worker jobs and projects a 7 percent decline to 2035. A posting only reaches the operators currently looking. On The Cognitive, one plain-English line becomes structured filters across ~900M profiles, and results come back ranked with a Strong match label rather than a score.
What to remember
- Say which machine in the first line, or the posting describes nobody
- Setters prepare, operators and tenders monitor. Hire for one of them
- Most of what postings demand is trainable on the floor within a year
- Put precision and PPE above years, and say the schedule plainly
Must have, Prioritise, Preferred
Each requirement set as Must have, Prioritise or Preferred, with the pool re-ranking in place.
The require-versus-train argument has a control in the product. Only must-haves are hard gates. Move the controller experience to Preferred and the field widens, and the search says what it broadened when the pool runs thin. Production hiring runs at volume, so pipeline stages, stage history and bulk invite sit behind it.
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Frequently asked questions
What does a machine operator do?
A machine operator runs production equipment that cuts, shapes, forms, fills or packages material. BLS describes the core duties as setting up and adjusting machines to blueprints, monitoring machine status through the run, adjusting temperature, cycle time and speed, and measuring, testing and inspecting finished workpieces. The specific machine decides everything else about the job.
What does a CNC machine operator do?
O*NET defines the occupation as operating computer-controlled tools, machines or robots to machine or process parts made of metal, plastic, wood, stone or other materials, and adds that the operator may also set up and maintain the equipment. The duties of a CNC machine operator start with the print: review the program specification, mount and align the tooling and workpiece, run the cycle, then measure the finished piece against the drawing.
What are the duties and responsibilities of a machine operator?
The responsibilities of a machine operator, taken from O*NET task statements, are setup and adjustment, monitoring the run, adjusting settings, inspecting and measuring output, loading material and removing finished or rejected pieces, and stopping the machine to clear jams or report malfunctions. Packaging and filling operators add weighing, grading, labelling and lot coding.
What are CNC operator duties and responsibilities?
In workflow order: read the blueprint or program spec to set machine operations and sequencing, mount and align tooling, fixtures and the workpiece, set up and run the computer-controlled machine, measure finished dimensions with precision instruments, and stop to change tooling or setup as the machining sequence requires. CNC operator responsibilities stop short of writing the programs, which is the programmer's job.
What qualifications does a machine operator need?
BLS lists a high school diploma as the typical entry-level education, no work experience in a related occupation, and moderate-term on-the-job training. O*NET reports 48 percent of incumbents in CNC tool operator roles saying a high school diploma or equivalent is required, 21 percent a post-secondary certificate. Most of the rest is trainable, so require only what you would genuinely reject on.
Is a machine operator the same as a machinist?
No, and the pay gap shows it. BLS put 2025 median pay at 47,700 dollars a year for metal and plastic machine workers and 58,750 for machinists. Machinists typically enter with a high school diploma and long-term on-the-job training; BLS notes some learn through apprenticeships, vocational schools or technical colleges. If your duties are setup, tooling and tolerance work, post the machinist title.
How much does a machine operator earn?
BLS reported 2025 median pay for metal and plastic machine workers as 47,700 dollars a year, which it also states as 22.94 dollars an hour. There is no single national median for machine operator, because it is a job title spread across many occupations rather than one. Check your own metro and machine family before you set a range.
What should a manufacturing machine operator job description include?
Six sections: about the role and the machine, what you will do, what we require, what we will train, working conditions, and pay and schedule. Google's JobPosting structured data requires a title, description, hiring organisation, job location and posting date, and its content policy does not allow postings with incomplete job descriptions. Base salary is recommended rather than required.
Do machine operators need OSHA training?
Be careful here. 29 CFR 1910.178(l) requires the employer to ensure every powered industrial truck operator is competent, demonstrated by completing that paragraph's training and evaluation, before being permitted to operate one. 29 CFR 1910.212(a) is a machine guarding duty on the employer about the machine, not a candidate qualification. Do not advertise for a generally OSHA certified operator.
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