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4Th Class Operator Jobs (NOW HIRING)

mkecounty

Sheet Metal Worker

Milwaukee, WI · On-site

$45.50/hr

ASOPE Facility Operating Engineer 1st Class or Power Plant Operational Engineer 3rd Class or NIULPE 4th Class Engineer license preferred * Refrigerant Handling Certification preferred * Fire Damper ...

ND Paper

Cogen Recovery Utility

Rumford, ME · On-site

$30.86 - $46.49/hr

... * 4th Class Stationary Steam preferred but not required. * Bachelor's degree or equivalent operating 2+years' experience in Boiler operations * Power Engineering * Marine Engineering -- Pulp and ...

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4th Class Operator information

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$10

$23

$37

How much do 4th class operator jobs pay per hour?

As of Sep 10, 2026, the average hourly pay for 4th class operator in the United States is $23.04, according to ZipRecruiter salary data. Most workers in this role earn between $18.03 and $21.88 per hour, depending on experience, location, and employer.

What is the difference between 4Th Class Operator vs 3Rd Class Operator?

Aspect4Th Class Operator3Rd Class Operator
Required CertificationsBasic certification, often a high school diploma or equivalentAdvanced certification, including additional training or licensing
Work EnvironmentEntry-level positions in industrial, manufacturing, or utility settingsMore complex roles with increased responsibilities in similar environments
Employer & Industry UsageCommon in power plants, factories, and utilitiesOften promoted from 4Th Class, used in similar industries

The main difference between a 4Th Class Operator and a 3Rd Class Operator lies in certification level, experience, and responsibilities. 3Rd Class Operators typically have more advanced training and handle more complex tasks, often supervising or managing 4Th Class Operators. Both roles are essential in industrial settings, with the 3Rd Class Operator serving as a step up in career progression.

Is a 4Th Class Operator job in demand?

The demand for 4th Class Operator jobs varies by industry and region but generally remains steady in sectors such as manufacturing, utilities, and transportation that require operational skills and certifications. Employment opportunities depend on industry growth, technological changes, and the availability of qualified candidates with the necessary licensing and safety training.

What are popular job titles related to 4Th Class Operator jobs?

For 4Th Class Operator jobs, the most frequently searched job titles are:

Infographic showing various 4Th Class Operator job openings in the United States as of September 2026, with employment types broken down into 1% As Needed, 63% Full Time, 35% Part Time, and 1% Contract. Highlights an 96% Physical, 1% Hybrid, and 3% Remote job distribution, with an average salary of $47,930 per year, or $23 per hour.

Sheet Metal Worker

Milwaukee, WI • On-site

mkecounty
See more jobs at mkecountyexternal

$45.50/hr

Full-time

Posted 21 days ago

Job description

Open Until Filled.

Sheet Metal Worker

Department of Administrative Services – Facilities

Hourly Pay: $45.50

 

Summary: This position performs a variety of metal fabrication using a variety of materials. Performs repairs and fabrication in HVAC, mechanical and various other disciplines. Tests and balances airflows, Motor, fan, belt, and bearing replacements, and PMs as needed. Must be able to work in all Milwaukee County facilities including secure detention/high-security facilities and work in areas with sensitive information and assets.  

Job Responsibilities: 

  • Repairs: Repairs to mechanical/HVAC, replacing existing component with better/more durable fabrication, maintain high and low pressure duct work.
  • Preventative Maintenance: Preventative Maintenance on HVAC equipment.
  • Emergency fabrication and or repair: Involved in breakdown repair and reconfiguration of existing problems.
  • Balancing: Air and water flow balancing.
  • Administrative work: Work order system, ordering materials, asset management.
  • Other Duties as Assigned: Cross department assistance as needed

Minimum Qualifications:

  • Current residency in the State of Wisconsin is required.
  • A valid State of Wisconsin Driver’s License at time of hire and maintained throughout employment.
  • HS Diploma/GED
  • At least Five (5) year or more of work experience as a Journeyman level employment.
  • Applicants must successfully undergo a criminal history background check to establish security clearance for Milwaukee County facilities and maintain this clearance throughout employment.

Knowledge, Skills, Abilities required:

  • Basic knowledge of all related computer and software applications, such as word processing and spreadsheets and Email, and Work Order System.

License: MUST HAVE

  • Completion certificate from either a State or Federal recognized Sheet metal program, or Sheet Metal apprenticeship

Preferred:

  • Tabb certifications preferred
  • ASOPE Facility Operating Engineer 1st Class or Power Plant Operational Engineer 3rd Class or NIULPE 4th Class Engineer license preferred
  • Refrigerant Handling Certification preferred
  • Fire Damper Test Certification preferred

 

NOTE:  This original application is open to permanent residents of the state of Wisconsin at the time of application. In accordance with Section 11, Rule 3 of the Civil Service Rules a non-competitive examination will be held for this position. The non-competitive examination will consist of criteria deemed appropriate by the Director of Human Resources.

APPLICANTS MUST POSSESS MINIMUM QUALIFICATIONS AT TIME OF FILING APPLICATION

PG5402 (DAS)

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