For most of the twentieth century, the clothes worn by American workers were made in America — cut from heavy duck canvas or denim in factories staffed by union workers, labeled with regulatory registration numbers, and built to last years of hard use. The brands behind those garments — Carhartt, Lee, Wrangler, Dickies — were not fashion companies. They were infrastructure.

Today, those same garments turn up in thrift stores with price tags that bear no relationship to what the retailer paid for them. A 1970s Carhartt chore coat in good condition can fetch three figures. A union-made Dickies work pant from the early 1990s sells for more than the new version costs at Walmart. To find them, you have to read the label.

Carhartt: Detroit’s Working Man

Hamilton Carhartt founded his eponymous company in Detroit in 1889, at a time when the city’s economy ran on industrial labor. His pitch was direct: he wanted to make overalls for railroad workers, and he talked to railroad workers before he made them. The result was a line of duck canvas bib overalls that became standard-issue across American industry.

Carhartt’s mid-century output is among the most reliable vintage in the workwear category. The tells are layered. A union label — typically from the Amalgamated Clothing Workers of America or its successors — confirms pre-1990s production. The phrase “Made in U.S.A.” appearing on the main label or a secondary tag marks domestic manufacture. Heavy twelve-ounce or heavier duck canvas, triple-stitched seams, and metal hardware are construction markers that distinguish the original from the contemporary product.

The dividing line is roughly the year 2000. As production shifted to Mexico and then Asia through the late 1990s, the union label disappeared and “Made in U.S.A.” was replaced first by “Made in Mexico” and eventually by “Imported.” Fabric weights dropped. The silhouettes stayed recognizable, but the construction did not. For the thrift buyer, that line is the most important one in the label.

Lee: Kansas to the World

The H.D. Lee Company was founded in Salina, Kansas in 1889, the same year as Carhartt, and spent its first decades as a wholesale grocery business before pivoting to garment manufacturing in 1913. The pivot defined American workwear history. Lee’s Union-All — a one-piece bib overall and jacket combined — became the standard coverall for mechanics, farmers, and factory workers across the country.

Lee labels went through documented redesigns at regular intervals, making the brand one of the more precisely datable in the vintage market. The hair-on-hide leather patch on denim from the 1940s through the 1960s is one of the clearest markers. The Storm Rider denim jacket, introduced in the 1950s with its blanket lining and western-cut front, carries its own label lineage that collectors have mapped in detail.

Union-made Lee from the mid-century period carries ILGWU (International Ladies’ Garment Workers’ Union) or ACWA labels. The ILGWU redesigned its labels on a known schedule — wording and logo changes trace a decade-by-decade chronology that acts as a secondary date stamp regardless of which brand is wearing it.

Wrangler: Built for the Rodeo

Wrangler entered the workwear market late and with a specific customer in mind. The brand was launched under parent company Blue Bell in 1947, and its first jeans were designed in consultation with professional rodeo riders — the fit, the seam placement, the reinforcement points all came from feedback from people who spent their days in the saddle.

Early Wrangler tags are co-branded “Blue Bell Wrangler,” a detail that immediately places a garment in the brand’s first decade. The transition away from the Blue Bell co-branding happened through the 1950s and into the 1960s. Western-style snap pockets and the distinctive arched back pocket stitching are construction markers that distinguish Wrangler from its denim contemporaries across all eras.

Blue Bell as a parent company remained prominent on labels into the 1970s. When VF Corporation acquired Blue Bell in 1986, the ownership traces again changed, and label-readers who know the corporate history can use those shifts as approximate brackets.

Dickies: The Texas Empire

The Williamson-Dickie Manufacturing Company was founded in Fort Worth, Texas in 1922 by C.N. Williamson and E.E. “Colonel” Dickie. It grew into one of the largest workwear companies in the world on the back of a few core products, most notably the 874 work pant — a straight-leg, high-rise twill trouser that became so ubiquitous in American industry it functioned as a default uniform for decades.

Dickies manufacturing remained substantially domestic through the 1980s. Union labels appear on mid-century pieces. The fabric quality in vintage Dickies — particularly the heavier-weight twill used before production moved offshore — is noticeably different from the current product. Seam construction, waistband reinforcement, and button quality all shifted as the sourcing model changed.

VF Corporation acquired Dickies in 2017, accelerating the already-complete shift to offshore production that had occurred through the 1990s and 2000s.

The Fall: NAFTA, Offshoring, and the End of Union Made

The transformation of American workwear manufacturing happened quickly and completely. NAFTA, which took effect in January 1994, restructured the economics of clothing production on the continent. Within a decade, the union labels that had appeared in American garments for nearly a century had largely vanished. “Made in U.S.A.” became a niche claim rather than a default one.

For vintage buyers, this history is encoded in the labels themselves. Each regulatory change, each union contract cycle, each sourcing shift left a physical trace in the garment. Reading those traces is the core skill of thrift identification.

Reading the Label: A Workwear Chronology

The following markers apply across Carhartt, Lee, Wrangler, and Dickies, and most other American workwear brands from the same era:

Union label present — confirms pre-1990s production for most brands. Cross-reference with the Union Labels guide to narrow the decade.

“Made in U.S.A.” + union label — typically places a garment in the 1960s through the mid-1980s, the peak of domestic union-made production.

“Made in U.S.A.” without union label — early-to-mid 1990s transitional period, after union agreements lapsed but before full offshore sourcing.

RN or WPL number only, no “Made in U.S.A.” — post-NAFTA production, likely mid-1990s onward. The RN Numbers guide can help narrow the date from the registration range.

No care label — if a garment has no care instruction label at all, it predates the FTC’s mandatory care labeling rule, which took effect in 1971. Combined with union and country-of-origin markers, this places the garment firmly in the pre-1971 era.

The brands that built American workwear did not disappear — they adapted, went offshore, and in some cases were acquired multiple times. But the garments they made before that transformation are a documented record of a specific industrial moment. The label is where that record lives.