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NJAB & Dispute Resolution

The National Joint Adjustment Board for the Sheet Metal Industry (NJAB) serves as an arbitration board to resolve grievance and contract renewal disputes after they have been processed through the local level.

The operation of the NJAB is to promote, improve and maintain peaceful labor-management relations by creating this medium for adjudication of locally deadlocked disputes and to discourage strikes, lockouts and work stoppages in the entire sheet metal industry. The board is comprised of labor and management panelists from the International Association of Sheet Metal, Air, Rail and Transportation Workers (SMART) and SMACNA, respectively.

Questions regarding the NJAB should be directed to the NJAB administrator, Maggie Powers.

2024 Dates and Information

June 11-13, 2024, Cancelled 


September 17-18, 2024 - St. Louis, MO – The cutoff date for submissions is Monday, August 26, 2024. Submissions mailed between August 22 and August 26 must be sent via overnight mail service to the street address listed below. 

NJAB Address:
P.O. Box 220956
Chantilly, VA  20153-0956

Street Address:
4201 Lafayette Center Drive
Chantilly, VA  20151-1219

NJAB Webinar
NJAB Webinar
Are you preparing to come before the NJAB?

Don't miss this previously recorded webinar!

Everything You Need to Know Before an NJAB Appearance


The NJAB process is conducted using the procedures set forth in the Procedural Rules of the National Joint Adjustment Board for the Sheet Metal Industry. Parties wishing to appear before the NJAB should familiarize themselves with the Procedural Rules.

Procedural Rules

To assist in conducting grievance hearings at the Local Joint Adjustment Board (LJAB) level, SMACNA and SMART have prepared LJAB Guidelines. Included below are the Guidelines, Grievance Form, and past training materials. 

Should you have any questions, please call or email Maggie Powers.

LJAB Guidelines, Grievance Form, and Training Materials

Contractor’s signatory to more than one craft, may find themselves faced with a jurisdictional dispute between those trade unions. Contractors may choose to stipulate to the Plan for the Settlement of Jurisdictional Disputes. SMACNA has available the most recent information on the Plan and the form for stipulation.

Plan for the Settlement of Jurisdictional Disputes in the Construction Industry Including Procedural Rules and Regulations, Plan Summary and Explanation of Plan Amendments.

Summary of Revised Jurisdictional Plan

Stipulation Form

Decisions of the NJAB are mailed simultaneously to the local parties to the dispute after the NJAB hearings. Decisions are only posted here after confirmation of receipt by all parties. They are listed below by year and month the matter was heard by the NJAB.

NJAB Decisions