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Manufacturing

3169 FURNACE MFG. OIL OR GAS FIRED

Hazard Group C Primary Classification
NCCI Code3169
IndustryManufacturing
Hazard GroupC
NAICS333414
ClassificationPrimary

About Class Code 3169

NCCI class code 3169 covers FURNACE MFG. OIL OR GAS FIRED within the Manufacturing industry. This classification is used by insurance carriers to determine workers’ compensation premium rates based on the risk level associated with these job duties.

When employers report payroll under class code 3169, the premium is calculated by multiplying the total payroll (in hundreds of dollars) by the applicable rate for this classification. The rate varies by state, carrier, and the employer’s experience modification factor (EMR).

Hazard Group C

Group C
ABCDEFG

Moderate risk. Common for skilled trades, food service, and moderate physical labor.

State-Specific Codes

Some states use different class codes. If your business operates in these states, use the state-specific code instead of the standard NCCI code.

StateCode
California3169
Delaware0456
Michigan3169
New Jersey3169
New York3169
Pennsylvania0456
Texas3066

Coverage Types

Class code 3169 supports the following insurance product types:

WC

Workers’ Comp

Primary vs Secondary Classification

This is a Primary Classification

Class code 3169 is a primary classification, meaning it directly describes the main business operations of an employer. Primary codes represent the core activity — what the business actually does.

A secondary (or standard exception) code describes support operations that exist in almost every business, like clerical work (8810) or outside sales (8742). These are assigned in addition to the primary code.

If your business primarily involves furnace mfg. oil or gas fired, this code should be your governing classification — the one that applies to most of your payroll.

How Class Code 3169 Affects Your Premium

Your workers’ compensation premium for employees classified under code 3169 is calculated as:

Premium = (Payroll / 100) × Rate × EMR

Where the rate is determined by your state and carrier, and EMR (Experience Modification Rate) reflects your company’s claims history relative to similar businesses. A lower EMR means lower premiums.

Accurate classification is critical — misclassifying employees under the wrong code can result in overpayment or underpayment that gets corrected during an audit.

Is This the Right Code for Your Business?

Classification Guidance

Class code 3169 (FURNACE MFG. OIL OR GAS FIRED) is the right fit if your employees’ primary duties involve work described by this classification within the Manufacturing industry and your operations fall into Hazard Group C.

Consider these factors when selecting your class code:

Related Class Codes in Manufacturing

View all Manufacturing class codes →

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