# Maintenance Workers, Machinery

> Lubricate machinery, change parts, or perform other routine machinery maintenance.
- **Entity Type:** role
- **Schema Version:** role.v1
- **Soc Code:** 49-9043.00
- **Summary:** Lubricate machinery, change parts, or perform other routine machinery maintenance.

## Aliases

- Maintainer
- Maintenance Mechanic
- Maintenance Technician (Maintenance Tech)
- Maintenance Worker
- Lubricator
- Machine Repairer
- Maintenance Craftsman
- Maintenance Man
- Oiler
- Overhauler
- Air Deodorizer Servicer
- Aircraft Fueler

## Tasks

| Text | Type | Iwa |
| --- | --- | --- |
| Dismantle machines and remove parts for repair, using hand tools, chain falls, jacks, cranes, or hoists. | Core | 4.A.3.a.2.s |
| Reassemble machines after the completion of repair or maintenance work. | Core | 4.A.3.a.2.d |
| Record production, repair, and machine maintenance information. | Core | 4.A.3.b.6.h |
| Lubricate or apply adhesives or other materials to machines, machine parts, or other equipment according to specified procedures. | Core | 4.A.3.b.5.a |
| Install, replace, or change machine parts and attachments, according to production specifications. | Core | 4.A.3.a.2.d |
| Set up and operate machines, and adjust controls to regulate operations. | Core | 4.A.3.a.2.i |
| Collaborate with other workers to repair or move machines, machine parts, or equipment. | Core | 4.A.4.b.1.a |
| Read work orders and specifications to determine machines and equipment requiring repair or maintenance. | Core | 4.A.1.a.1.b |
| Inspect or test damaged machine parts, and mark defective areas or advise supervisors of repair needs. | Core | 4.A.1.b.2.g |
| Start machines and observe mechanical operation to determine efficiency and to detect problems. | Core | 4.A.1.a.2.a |
| Transport machine parts, tools, equipment, and other material between work areas and storage, using cranes, hoists, or dollies. | Core | 4.A.3.a.3.h |
| Collect and discard worn machine parts and other refuse to maintain machinery and work areas. | Core | 4.A.3.a.1.c |

## Emerging Tasks

| Text |
| --- |
| Troubleshoot electrical, hydraulic, or mechanical equipment and machines. |

## Activities

| Name | Iwa |
| --- | --- |
| Reassemble equipment after repair. | 4.A.3.a.2.d |
| Observe equipment in operation to detect potential problems. | 4.A.1.a.2.a |
| Inspect mechanical equipment to locate damage, defects, or wear. | 4.A.1.b.2.g |
| Test mechanical equipment to ensure proper functioning. | 4.A.1.b.2.l |
| Communicate with coworkers to coordinate installations or repairs. | 4.A.4.a.2.c |
| Lubricate equipment to allow proper functioning. | 4.A.3.b.5.a |
| Install machine or equipment replacement parts. | 4.A.3.a.2.d |
| Disassemble equipment for maintenance or repair. | 4.A.3.a.2.s |
| Maintain repair or maintenance records. | 4.A.3.b.6.h |
| Read work orders or descriptions of problems to determine repairs or modifications needed. | 4.A.1.a.1.b |
| Adjust equipment to ensure optimal performance. | 4.A.3.a.2.i |
| Confer with coworkers to resolve equipment problems. | 4.A.4.b.1.a |
| Maintain inventories of materials, equipment, or products. | 4.A.4.c.3.a |
| Order materials, supplies, or equipment. | 4.A.4.c.3.e |
| Operate cranes, hoists, or other moving or lifting equipment. | 4.A.3.a.3.h |
| Clean work areas. | 4.A.3.a.1.c |
| Clean equipment, parts, or tools to repair or maintain them in good working order. | 4.A.3.a.1.c |
| Replace worn, damaged, or defective mechanical parts. | 4.A.3.b.4.c |
| Repair worn, damaged, or defective mechanical parts. | 4.A.3.b.4.c |
| Test fluids to identify contamination or other problems. | 4.A.1.b.2.c |
| Prepare compounds or solutions to be used for repairs. | 4.A.3.a.1.a |
| Position containers to receive materials or workpieces. | 4.A.3.a.2.v |

## Capabilities

| Name | Family | Value |
| --- | --- | --- |
| Mechanical | knowledge | 4.54 |
| Arm-Hand Steadiness | ability | 4 |
| Operations Monitoring | transferable_skill | 3.75 |
| Equipment Maintenance | transferable_skill | 3.75 |
| Troubleshooting | transferable_skill | 3.75 |
| Repairing | transferable_skill | 3.75 |
| Operation and Control | transferable_skill | 3.62 |
| Problem Sensitivity | ability | 3.62 |
| Manual Dexterity | ability | 3.38 |
| Near Vision | ability | 3.38 |
| Production and Processing | knowledge | 3.37 |
| Control Precision | ability | 3.25 |
| Administration and Management | knowledge | 3.23 |
| Quality Control Analysis | transferable_skill | 3.12 |
| Visualization | ability | 3.12 |
| Multilimb Coordination | ability | 3.12 |
| Extent Flexibility | ability | 3.12 |
| English Language | knowledge | 3.05 |
| Design | knowledge | 3.04 |
| Reading Comprehension | essential_skill | 3 |
| Active Listening | essential_skill | 3 |
| Critical Thinking | essential_skill | 3 |
| Coordination | transferable_skill | 3 |
| Judgment and Decision Making | transferable_skill | 3 |
| Time Management | transferable_skill | 3 |
| Oral Expression | ability | 3 |
| Deductive Reasoning | ability | 3 |
| Inductive Reasoning | ability | 3 |
| Information Ordering | ability | 3 |
| Flexibility of Closure | ability | 3 |
| Perceptual Speed | ability | 3 |
| Selective Attention | ability | 3 |
| Finger Dexterity | ability | 3 |
| Static Strength | ability | 3 |
| Trunk Strength | ability | 3 |
| Visual Color Discrimination | ability | 3 |
| Education and Training | knowledge | 2.99 |
| Engineering and Technology | knowledge | 2.9 |
| Speaking | essential_skill | 2.88 |
| Complex Problem Solving | transferable_skill | 2.88 |

## Skills

| Name | Type |
| --- | --- |
| Equipment Maintenance | Specialized Skill |
| Visualization | Specialized Skill |
| English Language | Common Skill |
| Time Management | Common Skill |
| Reading Comprehension | Common Skill |
| Microsoft Word | Common Skill |
| Microsoft PowerPoint | Common Skill |
| Microsoft Outlook | Common Skill |
| Microsoft Excel | Common Skill |
| Information Ordering | Specialized Skill |
| Inductive Reasoning | Common Skill |
| Finger Dexterity | Common Skill |
| Deductive Reasoning | Common Skill |
| Critical Thinking | Common Skill |
| Active Listening | Common Skill |
| Speech Recognition | Specialized Skill |
| Installation | Specialized Skill |
| Complex Problem Solving | Common Skill |
| Mathematics | Common Skill |
| Equipment Selection | Specialized Skill |
| Depth Perception | Common Skill |
| Active Learning | Common Skill |
| Social Perceptiveness | Common Skill |
| Writing | Common Skill |
| Chemistry | Specialized Skill |
| Instructing | Specialized Skill |
| Physics | Specialized Skill |
| Systems Analysis | Specialized Skill |
| Negotiation | Common Skill |
| Learning Strategies | Specialized Skill |
| Database Software | Specialized Skill |
| Psychology | Specialized Skill |
| Telecommunications | Specialized Skill |
| Geography | Specialized Skill |
| Biology | Specialized Skill |
| Foreign Language | Common Skill |
| Presentation Software | Specialized Skill |

## Tools

| Example | Category | Hot | In Demand |
| --- | --- | --- | --- |
| Microsoft Excel | Spreadsheet software | yes | no |
| Microsoft Office software | Office suite software | yes | no |
| Microsoft Outlook | Electronic mail software | yes | no |
| Microsoft PowerPoint | Presentation software | yes | no |
| Microsoft Word | Word processing software | yes | no |
| SAP software | Enterprise resource planning ERP software | yes | no |
| Computerized maintenance management system software CMMS | Facilities management software | no | no |
| Database software | Data base user interface and query software | no | no |
| Management information systems MIS | Enterprise resource planning ERP software | no | no |
| Scheduling software | Calendar and scheduling software | no | no |
| Web browser software | Internet browser software | no | no |

## Work Context

| Name | Value |
| --- | --- |
| Wear Common Protective or Safety Equipment such as Safety Shoes, Glasses, Gloves, Hearing Protection, Hard Hats, or Life Jackets | 4.95 |
| Freedom to Make Decisions | 4.44 |
| Exposed to Contaminants | 4.38 |
| Exposed to Sounds, Noise Levels that are Distracting or Uncomfortable | 4.35 |
| Spend Time Standing | 4.3 |
| Contact With Others | 4.27 |
| Face-to-Face Discussions with Individuals and Within Teams | 4.25 |
| Work With or Contribute to a Work Group or Team | 4.14 |
| Spend Time Using Your Hands to Handle, Control, or Feel Objects, Tools, or Controls | 4.13 |
| Importance of Being Exact or Accurate | 4.1 |
| Determine Tasks, Priorities and Goals | 4 |
| Health and Safety of Other Workers | 3.98 |
| Consequence of Error | 3.87 |
| Exposed to Hazardous Equipment | 3.86 |
| Frequency of Decision Making | 3.77 |
| E-Mail | 3.76 |
| Indoors, Not Environmentally Controlled | 3.71 |
| Exposed to Hazardous Conditions | 3.71 |
| Time Pressure | 3.7 |
| Spend Time Walking or Running | 3.6 |
| Importance of Repeating Same Tasks | 3.58 |
| Work Outcomes and Results of Other Workers | 3.56 |
| Indoors, Environmentally Controlled | 3.54 |
| Telephone Conversations | 3.52 |
| Impact of Decisions on Co-workers or Company Results | 3.49 |
| Coordinate or Lead Others in Accomplishing Work Activities | 3.47 |
| Exposed to Cramped Work Space, Awkward Positions | 3.46 |
| Exposed to Very Hot or Cold Temperatures | 3.45 |
| Pace Determined by Speed of Equipment | 3.36 |
| Physical Proximity | 3.28 |
| Spend Time Making Repetitive Motions | 3.25 |
| In an Open Vehicle or Operating Equipment | 3.14 |
| Spend Time Bending or Twisting Your Body | 2.99 |
| Exposed to High Places | 2.97 |
| Outdoors, Exposed to All Weather Conditions | 2.91 |
| Wear Specialized Protective or Safety Equipment such as Breathing Apparatus, Safety Harness, Full Protection Suits, or Radiation Protection | 2.87 |
| Exposed to Extremely Bright or Inadequate Lighting Conditions | 2.86 |
| Spend Time Kneeling, Crouching, Stooping, or Crawling | 2.85 |
| Conflict Situations | 2.68 |
| Exposed to Minor Burns, Cuts, Bites, or Stings | 2.59 |

## Preparation

- **Job Zone:** 3
- **Job Zone Name:** Job Zone Three: Medium Preparation Needed
- **Education:** Most occupations in this zone require training in vocational schools, related on-the-job experience, or an associate's degree.
- **Experience:** Previous work-related skill, knowledge, or experience is required for these occupations. For example, an electrician must have completed three or four years of apprenticeship or several years of vocational training, and often must have passed a licensing exam, in order to perform the job.
- **Svp Range:** (6.0 to < 7.0)

### Education Distribution

| Label | Percentage |
| --- | --- |
| Post-Secondary Certificate | 54.1 |
| High School Diploma | 40.73 |
| Associate's Degree (or other 2-year degree) | 2.59 |
| Post-Baccalaureate Certificate | 2.59 |

## Person Fit

| Name | Family | Value |
| --- | --- | --- |
| Realistic | career_interest_type | 7 |
| Mechanics/Electronics | specific_interest_area | 6.51 |
| Physical/Manual Labor | specific_interest_area | 5.91 |
| Conventional | career_interest_type | 4.25 |
| Engineering | specific_interest_area | 3.93 |
| Transportation/Machine Operation | specific_interest_area | 2.74 |
| Dependability | work_style | 2.5 |
| Construction/Woodwork | specific_interest_area | 2.19 |
| Attention to Detail | work_style | 2.19 |
| Investigative | career_interest_type | 2.04 |
| Cautiousness | work_style | 1.89 |
| Perseverance | work_style | 1.43 |
| Agriculture | specific_interest_area | 1.4 |
| Management/Administration | specific_interest_area | 1.29 |
| Information Technology | specific_interest_area | 1.24 |
| Enterprising | career_interest_type | 1.2 |

## Related Roles

| Soc Code | Slug | Title | Tier |
| --- | --- | --- | --- |
| 49-9041.00 | role-49-9041-00 | Industrial Machinery Mechanics | Primary-Short |
| 51-4033.00 | role-51-4033-00 | Grinding, Lapping, Polishing, and Buffing Machine Tool Setters, Operators, and Tenders, Metal and Plastic | Primary-Short |
| 49-2092.00 | role-49-2092-00 | Electric Motor, Power Tool, and Related Repairers | Primary-Short |
| 51-4081.00 | role-51-4081-00 | Multiple Machine Tool Setters, Operators, and Tenders, Metal and Plastic | Primary-Short |
| 49-3042.00 | role-49-3042-00 | Mobile Heavy Equipment Mechanics, Except Engines | Primary-Short |
| 51-4194.00 | role-51-4194-00 | Tool Grinders, Filers, and Sharpeners | Primary-Long |
| 51-7042.00 | role-51-7042-00 | Woodworking Machine Setters, Operators, and Tenders, Except Sawing | Primary-Long |
| 49-3043.00 | role-49-3043-00 | Rail Car Repairers | Primary-Long |
| 53-7063.00 | role-53-7063-00 | Machine Feeders and Offbearers | Primary-Long |
| 49-9012.00 | role-49-9012-00 | Control and Valve Installers and Repairers, Except Mechanical Door | Primary-Long |
| 51-9022.00 | role-51-9022-00 | Grinding and Polishing Workers, Hand | Supplemental |
| 51-2031.00 | role-51-2031-00 | Engine and Other Machine Assemblers | Supplemental |

## Career Clusters

| Cluster | Slug |
| --- | --- |
| Construction | construction |

## Education Level

- **Category:** High school diploma or equivalent

## Study Programs

| Title | Slug |
| --- | --- |
| Mechanic and Repair Technologies/Technicians | mechanic-and-repair-technologies-technicians |

## Market

- **Median Wage:** 60500
- **Mean Wage:** 61820
- **Pct10Wage:** 40080
- **Pct25Wage:** 48600
- **Pct75Wage:** 72260
- **Pct90Wage:** 83560
- **Employment:** 56540
- **Area Title:** U.S.

## Industries


### Top

| Naics | Slug | Title | Level | Employment | Median Wage | Lq |
| --- | --- | --- | --- | --- | --- | --- |
| 31-33 | 31-33 | Manufacturing | Sector | 31060 | 61470 | 6.64 |
| 42 | 42 | Wholesale Trade | Sector | 4680 | 55220 | 2.11 |
| 48-49 | 48-49 | Transportation and Warehousing | Sector | 4030 | 58130 | 1.49 |
| 21 | 21 | Mining, Quarrying, and Oil and Gas Extraction | Sector | 2730 | 70760 | 12.98 |
| 56 | 56 | Administrative and Support and Waste Management and Remediation Services | Sector | 2080 | 48230 | 0.63 |
| 81 | 81 | Other Services (except Public Administration) | Sector | 1990 | 50910 | 1.23 |
| 23 | 23 | Construction | Sector | 1980 | 60320 | 0.66 |
| 54 | 54 | Professional, Scientific, and Technical Services | Sector | 1400 | 65500 | 0.35 |
| 71 | 71 | Arts, Entertainment, and Recreation | Sector | 1340 | 64750 | 1.38 |
| 561320 | 561320 | Temporary Help Services | National industry | 980 | 44520 | 1.01 |
| 53 | 53 | Real Estate and Rental and Leasing | Sector | 880 | 48200 | 1.01 |
| 22 | 22 | Utilities | Sector | 620 | 88520 | 2.92 |

### Concentrated

| Naics | Slug | Title | Level | Employment | Lq |
| --- | --- | --- | --- | --- | --- |
| 21 | 21 | Mining, Quarrying, and Oil and Gas Extraction | Sector | 2730 | 12.98 |
| 221113 | 221113 | Nuclear Electric Power Generation | National industry | 120 | 8.81 |
| 31-33 | 31-33 | Manufacturing | Sector | 31060 | 6.64 |
| 332710 | 332710 | Machine Shops | National industry | 440 | 4.62 |
| 221112 | 221112 | Fossil Fuel Electric Power Generation | National industry | 110 | 4.21 |
| 22 | 22 | Utilities | Sector | 620 | 2.92 |
| 423820 | 423820 | Farm and Garden Machinery and Equipment Merchant Wholesalers | National industry | 120 | 2.87 |
| 42 | 42 | Wholesale Trade | Sector | 4680 | 2.11 |
- **Count:** 28

## Ai Signals

| Source | Label | Score | Scale | Release |
| --- | --- | --- | --- | --- |
| frey_osborne | Computerization probability | 0.86 | 0-1 probability | 2013-baseline-2016-employment-snapshot |
| felten_aioe | AI occupational exposure | -0.9735492 | relative exposure score | 2021-plus-generative-ai-workbooks |
| felten_image_generation_aioe | Image generation occupational exposure | -0.7243118 | relative exposure score | 2021-plus-generative-ai-workbooks |
| felten_language_modeling_aioe | Language modeling occupational exposure | -1.015195 | relative exposure score | 2021-plus-generative-ai-workbooks |

## Ai Outlook


### Index

- **Value:** 23
- **Percentile:** 21
- **Band:** Low
- **Version:** ai-exposure-index-v1

#### Components

| Percentile | Source |
| --- | --- |
| 18 | felten_aioe |
| 22 | openai_gpts_are_gpts |
| 30 | microsoft_working_with_ai |
- **Component Count:** 3

### Exposure

| Source | Label | Value | Percentile | Band | Note |
| --- | --- | --- | --- | --- | --- |
| felten_aioe | Overall AI exposure (Felten et al.) | -0.9735492 | 18 | Low | How much this job's abilities overlap with what AI systems can do, across many AI capabilities. A relative research score, not a forecast of job loss. |
| eloundou_gamma | LLM task exposure, γ (OpenAI / Eloundou) | 0.17142857142857143 | 22 | Low | Share of this job's tasks where a large language model plus simple tools could cut the time to do them by at least half. γ is capped at 1.0 and many jobs reach that ceiling, so treat a top score as 'in the top group', not a precise rank. |
| microsoft_applicability | AI assistant applicability (Microsoft) | 0.09805679855790171 | 30 | Low | How applicable today's AI assistants are to this job's activities, measured from real Microsoft Copilot conversations. Applicability is not the same as replacement. |

### Frey Historical

- **Source:** frey
- **Label:** Computerization probability (Frey & Osborne, 2013)
- **Value:** 0.86
- **Percentile:** 72
- **Band:** High
- **Note:** A pre-LLM (2013) estimate of how automatable this job is by computerization and robotics. Shown for historical context only — it is not part of any current AI ranking.
- **Teleworkable:** no

### Eloundou

- **Alpha:** 0.11428571428571428
- **Beta:** 0.14285714285714285
- **Gamma:** 0.17142857142857143

### Usage Tasks


### Bls

- **Growth Percent:** -2.8
- **Growth Percentile:** 17
- **Direction:** Declining
- **Annual Openings Thousands:** 4.8
- **Annual Openings Percentile:** 48
- **Employment2024Thousands:** 57.5
- **Employment2034Thousands:** 55.9

### Sources

| Source | Version |
| --- | --- |
| bls_employment_projections | 2024-2034 |
| dingel_neiman | dingel-neiman-workathome |
| felten_aioe | felten-raj-seamans-aioe |
| frey_osborne | frey-osborne-automation |
| microsoft_working_with_ai | working-with-ai |
| openai_gpts_are_gpts | gpts-are-gpts |

## Counts

- **Tasks:** 18
- **Skills:** 37
- **Capabilities:** 120
- **Tools:** 11
- **Related Roles:** 20

## Source

- **Dataset:** gold.onet_role_starter_surface
- **Version:** 30.3
- **Generated At:** 2026-06-02T21:00:32.945303+00:00
- **Content Hash:** 38eac7b58639d50a