Sheet Metal Workers Local 17 J.A.T.C.
1181 Adams St., Dorchester, MA 02124

Becoming an Apprentice


What is a sheet metal worker?

Sheet metal workers are part of the buildings and construction trade. When working in our union shops they layout, fabricate and assemble sheet metal products. Field work consists of installation of sheet metal products in buildings and on construction projects.

The sheet metal trade is unique due to the fact that it is one of the few crafts that start with raw materials, creates a product, installs and maintains the product.

When working in a shop, sheet metal workers determine the quantity and type of material that is needed to correspond with blueprints and specifications of the job.

Utilizing a combination of mathematics, layout tools, hammers, drills, hacksaws, plasma and laser beam cutting systems, computers, cutting, forming, seaming or welding machines, workers craft the metal into the desired product.

The fabricated parts are shipped to the jobsite to be installed according to blueprints and coordinated by sheet metal workers.

The maintenance sector includes preventive maintenance, repair, testing and balancing of installed HVAC systems.

Items commonly fabricated and installed include HVAC systems, metal roofs, kitchen hoods and equipment, various flashings, gutters decorative architectural features.

Sheet metal workers constantly meet new challenges, using their hands, visualizing and analyzing how components can be installed or made, how mechanical systems work, it’s an interesting and evolving field with exciting growth potential.

The apprenticeship program is an “earn while you learn” program involving paid full time work and related classes.


Our apprenticeship program is jointly sponsored by Sheet Metal Workers’ Local 17 and Sheet Metal & Air Conditioning Association of Boston.

As an employee and union member the program affords excellent medical, dental and optical coverage as well as annuity and pension plans.


This is a 5 year apprenticeship consisting of 7000 hours of on-the-job training with 750 hours of classroom instruction and training. Classes are held Monday thru Friday from 6:00 A.M. – 2:30 P.M.

Application Instructions

All applications are online only. Try the QR code below.

Applications will reopen January 1st 2024.  


Applicants must be 18 years old on or before 8/1/2024.

You must have the following documents available for upload, when filling out the application

  1. A copy of your High School transcripts or confirmation of your graduation or G.E.D, an official copy with scores is required.
  2. Three letters of recommendation 
  3. Social Security card
  4. Valid Driver’s License
  5. Birth Certificate.
  6. Work history or resume
  7. DD-214 (if applicable) Thank you for your service 

Without uploaded documents you will not be able to complete the application.