How to Fill Out and Mail the NJ Boiler License Renewal Form (MI-228)

To renew a New Jersey boiler operator or stationary engineer license, complete Form MI-228 and mail it to the Bureau of Boiler and Pressure Vessel Compliance in Trenton with a passport-size photo, your signature on a separate page, and a check for $80 (one-year renewal) or $160 (three-year renewal) made payable to the Commissioner of LWD.¹ All four items have to arrive together. If anything is missing, the bureau returns the whole package and you keep operating on borrowed time.

What Goes in the Envelope

The MI-228 lists four required items:¹

The completed MI-228 application, with every field filled in.
A 2″ x 2″ passport-style photograph.
Your signature on a standalone sheet, separate from the signature on the application itself.
Payment by money order, certified check, cashier’s check, or business check, payable to the “Commissioner of LWD.”

Personal checks are not listed among the accepted payment types. Get the photo and the separate signature page ready before you start the form so you can mail everything in one trip.

Filling Out the Form

Download the MI-228 from the Bureau of Boiler and Pressure Vessel Compliance page on the New Jersey Department of Labor and Workforce Development website.² It is a fillable PDF, but you can also print and complete it by hand.

Renewal Term and Fee

At the top of the form, check the box for either a one-year renewal at $80 or a three-year renewal at $160, and write in the amount enclosed.¹ The three-year option costs the same per year as the one-year option, so it saves you two rounds of paperwork if you plan to keep the license.

Personal Information

Enter your full legal name, physical address, mailing address if different, phone number, cell number, email, license number, and date of birth. The form does not ask for a Social Security number. Your name and license number need to match your current license card exactly, because discrepancies cause processing delays.

Employer Information

Fill in your current employer’s name and mailing address, plus your supervisor’s name, phone number, and email. If you are not currently working or you are retired, the form provides checkboxes for both situations so you can skip the employer section.¹ No employer signature is required.

Corrections and Signature

A corrections section at the bottom lets you note changes to your name or other identifying information since your last renewal. Sign and date the application. Signing the form does not replace the separate signature page; you still need both.

Where to Mail It

Send all four items together to:¹

NJ Department of Labor and Workforce Development
Division of Public Safety and Occupational Safety and Health
Bureau of Boiler and Pressure Vessel Compliance
P.O. Box 392
Trenton, NJ 08625-0392

The MI-228 describes only a mail-in process. The Bureau’s website and the form itself do not reference an online renewal option for boiler operator or stationary engineer licenses, so plan around mail delivery time rather than instant confirmation.²

Fees at a Glance

Fees depend on the term and on whether your license is still current:³

One-year renewal, current license: $80
Three-year renewal, current license: $160
One-year late renewal: $120
Three-year late renewal: $240

If Your License Has Already Expired

You have a limited window to renew an expired license without retaking the exam. The MI-228 allows late renewal up to three months past the expiration date at the higher late fee ($120 for one year, $240 for three years).¹ N.J.A.C. 12:90-8.19 references a late-renewal period of up to four months, so the form and the regulation are slightly out of sync. Renewing within three months keeps you safely within both.³

If your license has been expired for more than three years, the state treats a renewal as an entirely new application and you have to go through the original licensing process, including any required examinations. The bureau may also destroy records tied to a license that has gone unrenewed for three years and one day past the expiration date, which effectively erases your credential.³

What It Costs to Work on an Expired License

Anyone who uses an expired license to perform the duties of a licensee faces a penalty of at least $500 and up to $5,000 per day. The supervisor or employer who allows it can be assessed the same per-day penalty.¹ Those numbers compound fast. A two-week gap between expiration and a completed renewal can expose both the operator and the employer to tens of thousands of dollars in liability, so put the renewal in the mail well before the expiration date printed on your license card.

1
New Jersey Department of Labor and Workforce Development. Stationary, Refrigeration, Power Engineer and/or Boiler Operator’s License Renewal Application
2
New Jersey Department of Labor and Workforce Development. Mechanical Inspection Bureau of Boiler and Pressure Vessel Compliance
3
Legal Information Institute. New Jersey Administrative Code 12:90-8.19 – Renewal of License