Auto Mechanic Unions: IAM, Teamsters and Union Dealership Jobs

BLS's union membership series counts broad occupation groups, not auto mechanics separately.

In its 2025 annual averages, 12.5 percent of employed wage and salary workers in installation, maintenance and repair occupations — 567,000 of 4,529,000 — were union members, and 13.6 percent were represented by unions.

The group covers automotive technicians alongside many other repair trades, so BLS publishes no technician-only rate.

For scale, BLS put the overall U.S. union membership rate at 10.0 percent in 2025.

The private-sector rate was 5.9 percent, against 32.9 percent in the public sector and 37.8 percent in local government.

Two industry rows bracket the trade.

Retail trade, the classification that includes car dealerships, had a 4.0 percent union membership rate in 2025.

"Other services," which includes repair shops, was at 3.5 percent.

One data caveat: BLS notes October 2025 survey data were not collected during the federal shutdown, so the 2025 annual figures are 11-month averages the agency says to interpret with caution.

So the honest answer is that mechanics are unionized in some workplaces — the case documented in this research is a dealership local, the one below — and the federal numbers that exist describe the occupation group and its industries rather than technicians alone.

For what the job itself involves, the automotive technician career guide covers the trade; this page stays on the union question.

Mechanics join unions through locals — the local union that negotiates and enforces a contract at the shops it organizes.

The local documented in depth in this site's research is IAM Automobile Mechanics Local 701, which represented mechanics at Chicago-area new-car dealerships under a contract the IAM calls the Standard Automotive Agreement.

The 2017 contract fight is the public record.

Nearly 2,000 Local 701 dealership mechanics struck against 130 new-car dealerships for nearly seven weeks, then ratified a four-year agreement with the Chicago New Car Dealer Committee (NCDC).

Per the IAM — a party to the dispute, so treat its characterizations as the union's — the deal included a significant across-the-board wage increase and two additional hours of base pay over the term.

It also shortened the apprenticeship scale from 10 to 5 years and raised tool insurance to cover up to $100,000; see how union apprenticeships work for the training side of that bargain.

One demand got its own language in the union's releases.

During the strike the IAM described a core issue as "fixing the problem of being forced to work for free," and said the NCDC's rejected offer "only included a one-hour gain in base pay."

The release does not spell out the pay mechanism behind either phrase, and the dealers' position is not in that source.

The Teamsters come up in "union mechanic" searches too.

This page's research verified the IAM's Chicago-area dealership contracts; it did not verify Teamsters contracts covering dealership technicians in a specific market, so check with the local unions that organize dealers in the market you are considering rather than assuming a dealer group is organized.

No verified comparison of union and non-union technician pay exists in this site's research, and no current union contract wage rates for mechanics were found in it.

What follows is the closest data on each side of the question.

The general pay benchmark comes from BLS's OEWS May 2025 survey, which counts wage-and-salary jobs across all industries: automotive service technicians and mechanics (SOC 49-3023) had a median of $50,620 a year ($24.34 an hour).

The OEWS data this research pulls carries no split of those jobs by union membership.

The 2017 Local 701 agreement is the one documented picture of what union negotiation changed at dealerships.

Per the IAM, it included an across-the-board wage increase, two additional hours of base pay over the term, a five-year apprenticeship scale in place of ten, and tool insurance covering up to $100,000.

For benefits, the federal survey that covers this trade reports at the occupation-group level — BLS's National Compensation Survey carries no benefit data at the 49-3023 level — so it describes installation, maintenance and repair workers as a whole, not a union premium.

BLS's Employee Benefits survey (March 2026, private industry, installation, maintenance and repair occupations) reports 81 percent had access to employer medical care benefits and 78 percent to retirement benefits, with 60 percent participating in each.

Paid leave access was 82 percent for paid sick leave, 93 percent for paid vacation and 94 percent for paid holidays.

What a union contract adds for a given technician therefore depends on the contract and on the shop's non-union offer, and this research found no federal benchmark that splits technician pay or benefits by union membership.

At a non-union shop, those same subjects — health coverage, paid time off, tool policies — are answered by the employer's own offer rather than a contract.

The market documented in this research is Chicago.

Local 701's 2017 agreement covered mechanics at 130 Chicago-area new-car dealerships.

For the national picture, the industry classifications frame where organized dealerships could exist rather than counting them.

Car dealerships sit in retail trade, where BLS put the 2025 union membership rate at 4.0 percent; repair shops sit in "other services," at 3.5 percent.

The public sector runs at a different level: 32.9 percent union membership in 2025, and 37.8 percent in local government.

Those rates cover every public-sector occupation, not technicians alone.

Whether a specific dealer group, independent shop or fleet is organized is a local question this research does not answer shop by shop.

The local unions that organize in your market, and the shop's own job postings, are the two places a current answer lives; dealership service openings are also listed on the automotive technician jobs board.

This research did not establish how a technician gets hired into an organized shop, so the steps below stick to the documented 2017 Local 701 contract and what to ask locally.

Four steps cover it:

Career information, not legal advice. Union representation and contract questions belong with the local union named, and wage-hour questions with the U.S. Department of Labor's Wage and Hour Division.