Apprenticeship Training in the United States (NAICS 611513)

1. Overview

Apprenticeship training is the "earn-while-you-learn" corner of the education economy. Establishments in this industry run structured programs that pair paid on-the-job training under a skilled mentor with related classroom instruction, ending in a recognized occupational credential. In the federal classification system this is North American Industry Classification System (NAICS) code 611513 — one slot inside the "Technical and Trade Schools" family — and in practice it is overwhelmingly a skilled-trades industry: electricians, plumbers, pipefitters, carpenters, sheet-metal workers, ironworkers, and machinists [4][19].

The reason to pay attention is that apprenticeship sits at the center of two large, durable stories: the chronic shortage of skilled tradespeople as the postwar workforce retires, and a reindustrialization wave (semiconductor fabs, power and grid build-out, data centers, infrastructure) that cannot happen without electricians and pipefitters.

It is worth being honest up front about how anyone actually participates. This is not a tidy "sector" of profit-seeking public companies. The establishments that do apprenticeship training are, by and large, nonprofit joint labor-management trusts, employer-association programs, public colleges, and government-funded intermediaries — not shareholder-owned firms. Public-market exposure is indirect (trade-school operators, workforce-services companies, and the contractors and manufacturers that benefit from a trained pipeline); direct private exposure runs through nonprofit training trusts, community colleges, and a small crop of venture-backed "apprenticeship-as-a-service" intermediaries [18]. There is no obvious U.S.-listed pure play.

2. What it is and how it is structured

Scope. NAICS 611513 covers establishments "primarily engaged in offering apprenticeship training programs" — applied (on-the-job) training plus related coursework [4]. The bulk of the activity runs through a Registered Apprenticeship Program (RAP), approved by the U.S. Department of Labor (DOL) or a State Apprenticeship Agency (SAA), which combines paid employment, structured on-the-job learning and mentorship, related technical instruction (RTI), progressive wage increases, and an industry-recognized credential [6]. In the index entries the trades dominate: carpenters', electricians', plumbers', steamfitters', and sheet-metal programs, plus "trade union and craft union apprenticeship training programs" [19].

The single most important structural fact: this code counts the training establishments — the joint apprenticeship training committees (JATCs), union-and-contractor training centers, and employer-association academies — not the apprentices' employers and not the apprentices' wages. A first-year electrical apprentice's paycheck sits in the construction industry codes; only the training center itself sits in 611513. That distinction governs every size figure below.

Ownership mix. Three models dominate:

• Joint labor-management (union) programs. A JATC is jointly governed by union and employer (contractor) trustees and funded through a multiemployer "Taft-Hartley" trust — an arrangement authorized under Section 302(c)(5) of the Labor Management Relations Act. These are nonprofit trusts, typically tax-exempt, subject to Employee Retirement Income Security Act (ERISA) fiduciary rules [15].
• Employer- and association-sponsored programs. Non-union contractors and trade associations (for example Associated Builders and Contractors, or ABC, chapters) run their own registered programs funded by member dues, employer fees, and tuition. As of 2024, roughly 84% of construction registered-apprenticeship providers were non-union [17].
• Intermediaries, colleges, and public programs. Community and technical colleges, workforce boards, and nonprofit or venture-backed "intermediaries" that stand up and administer programs on behalf of many employers [18]. Many programs are captive workforce investments rather than standalone businesses.

What it excludes (adjacent NAICS codes). Do not confuse 611513 with:

• 611511 Cosmetology and Barber Schools, 611512 Flight Training, and 611519 Other Technical and Trade Schools — the rest of the 6115 trade-school group [4][19];
• 611410 Business and Secretarial Schools, 611420 Computer Training, and 611430 Professional and Management Development Training [4];
• 624310 Vocational Rehabilitation Services (job training aimed at unemployed, disabled, or disadvantaged workers) [4];
• degree-granting colleges and universities; and
• the contractors and manufacturers who employ apprentices — they sit in the construction (23xxxx) and manufacturing (31–33) sectors, not here.

3. How big it is

Using our federal ground-truth figures:

The shape is telling. Roughly 1,000 firms split ~$2.15 billion of receipts — about $2 million per firm — and the industry directly employs only about 14,600 people (instructors, coordinators, administrators) at an average payroll near $51,000 [1][2]. Concentration is extremely low: the top four firms hold just 10.4% of receipts, the top 50 only 45.8%, and the HHI is 65.5 — a tiny number that signals one of the most fragmented industries in the economy, made up of hundreds of independent local training centers [2]. Essentially the entire industry falls under the SBA's small-business threshold [3]. (The SBA number is a federal procurement classification, not an estimate of market size [3].)

The undercount caveat (large and important here). These figures dramatically understate apprenticeship's real economic footprint, because they count only the training establishments, and only those with paid employees. County Business Patterns excludes self-employed and nonemployer businesses and most government employees, so it misses tiny providers, public programs, some union and nonprofit systems, community-college activity, and employer-run training booked inside another industry [5]. Meanwhile the wider Registered Apprenticeship system had roughly 680,000 active apprentices at a point in time and served on the order of 940,000 participants across fiscal year 2024, producing about 112,000 completers — up from ~318,000 active apprentices a decade earlier, a roughly 114% increase [7][8]. (The two headcounts are different metrics — a point-in-time active count versus the total number of people who were apprentices at any time during the year — not conflicting estimates.) The wages those hundreds of thousands of apprentices earn are booked in construction, manufacturing, and health care, not in 611513. Two further distortions: much of the sector's money is employer contributions and government grants rather than commercial "receipts," and many programs are nonprofit trusts whose finances the Economic Census captures imperfectly. Read 611513 as a proxy for the training infrastructure, not for apprenticeship as a labor-market institution. Note also that the federal file provides no margin, tuition-yield, completion-rate, or cost-per-apprentice figures — those should not be inferred from receipts and payroll.

4. The investable universe

There is no pure-play, publicly traded "apprenticeship training" company. The direct operators are nonprofits, trusts, associations, and public colleges. Public-market investors get exposure only adjacently; private investors reach the space mainly through nonprofit or venture channels.

Public-market companies with adjacent exposure (apprenticeship is a slice, not the whole, of each):

Treat these as workforce-services and trade-school equities, not apprenticeship pure-plays. MAN, UTI, and LINC are the closest listed proxies; PWR, EME, and HII are better viewed as apprenticeship-intensive employers than as training businesses. Broader for-profit education names — Adtalem Global Education (ATGE, NYSE), Perdoceo Education (PRDO, Nasdaq), and Stride (LRN, NYSE) — touch the career-and-workforce theme more loosely still. In every case apprenticeship is a pipeline or marketing feature, not a separately reported revenue line.

Major private and non-corporate operators (where the actual training happens):

• Union joint programs / building trades. The largest single operator group is the electrical trades' Electrical Training Alliance — the International Brotherhood of Electrical Workers (IBEW) with the National Electrical Contractors Association (NECA) — which reports roughly 300 training centers and over $200 million in annual training investment [16]. Comparable national programs exist for the UA (plumbers and pipefitters), the carpenters, the ironworkers, and SMART (sheet-metal and transportation workers).
• Employer associations. ABC and Associated General Contractors (AGC) chapters run the large non-union share of construction programs [17].
• Construction-training platforms. The nonprofit National Center for Construction Education and Research (NCCER) provides standardized craft-training curricula and apprenticeship support across the sector [34].
• Community and technical colleges serving as related-instruction providers and intermediaries [18].
• Private and venture-backed intermediaries ("apprenticeship-as-a-service") such as Multiverse, Guild, Franklin Apprenticeships, and CareerWise — companies that build and administer programs for employers, largely outside the trades (tech, finance, health care) [18][33]. Penn Foster Group (backed by BayPine and Two Sigma Impact since a 2021 investment; terms undisclosed) provides online career training and apprenticeship-related RTI and program support [32].

Private ownership is not fully transparent across the sector. Investors should verify current ownership, debt, and sponsor arrangements rather than relying on historical acquisition announcements.

5. How the money works

Because most operators are nonprofit, the right lens is funding and cost recovery per apprentice, not profit margin. The general flow: the employer pays apprentice wages and supervision; a provider or sponsor delivers RTI, recruiting, administration, and assessment; government or philanthropic funding may offset instruction, on-the-job training, or support services; and the employer's payoff is a trained labor pipeline and higher retention [25]. A 2026 DOL review found rigorous employer return-on-investment (ROI) estimates ranging from about 40% to 90% — but that is employer-level evidence, not a guaranteed provider margin [24].

Union JATCs (the largest slice of receipts). The economics run on a negotiated employer contribution — typically a fixed number of cents per hour worked by every covered journeyworker and apprentice, written into the collective bargaining agreement and paid into the training trust [15]. Multiply the contribution rate by total covered hours across all signatory contractors and you get the training fund's revenue. Because it scales with hours worked, the fund's income rises and falls with the local construction cycle: busy years fund new equipment and instructors; downturns squeeze the trust. Add investment income on trust reserves and periodic government grants. There are no shareholders; "profit" is reinvested capacity (facilities, instructors, tools).

Employer/association, intermediary, and for-profit programs. These recover cost through member dues, per-apprentice fees charged to employers, tuition, government workforce contracts, and state reimbursements. For-profit intermediaries add a management or placement fee per apprentice and often monetize grant capture and employer subscriptions. Apprentices are usually not the primary payer.

Unit economics that matter across all models:

• Contribution rate × covered hours (union) or fee per apprentice × headcount (fee-based) — the top line.
• Cost per completer, which is punishing when attrition is high (see Risks): enrollment revenue and grant dollars are spread over however many apprentices actually finish.
• Instructor and facility utilization — training centers are fixed-cost heavy (buildings, labs, tools), so filling seats and running multiple shifts is the operating lever.
• Government leverage — public dollars unlocked per private dollar. Registered programs can access federal and state grants, tuition assistance, and, critically for construction, public work: many federally funded projects carry prevailing-wage (Davis-Bacon) rules and project labor agreements that require or favor registered apprentices, steering demand and dollars toward registered programs.

6. Demand drivers

• Skilled-trades shortage and demographics. An aging trades workforce and years of under-recruitment have left chronic shortages of electricians, welders, and pipefitters — the core reason employers fund apprenticeship at all. The U.S. Bureau of Labor Statistics (BLS) projects electrician employment to grow about 9% with roughly 81,000 openings a year (May 2024 median wage $62,350), and construction and extraction occupations overall to see about 649,300 openings a year [20][21].
• Expansion beyond construction. Registered apprenticeship is spreading into health care, manufacturing, energy, transportation, financial services, and information technology (IT) [6]. BLS projects roughly 1.9 million annual openings in health-care occupations and about 317,700 in computer and IT occupations — large adjacent pools that diversified apprenticeship programs are beginning to tap [22][23].
• Reindustrialization and megaprojects. Semiconductor fabs, electric-grid and power expansion, data-center and AI build-out, clean-energy projects, and infrastructure spending convert directly into demand for trained electricians and mechanical trades — and thus apprenticeship enrollment. Because the industry is construction-weighted, demand is cyclical and sensitive to interest rates and project financing.
• Policy tailwinds. An April 2025 executive order, "Preparing Americans for High-Paying Skilled Trade Jobs of the Future," set a goal of reaching and surpassing 1 million new active apprentices and directed federal agencies to realign workforce funding accordingly [13]. DOL has since put competitive money behind expansion — for example a roughly $162 million award round and a separate $145 million performance-based expansion program in 2026 [14]. (Progress toward the 1-million target is contested and forward-looking, not settled [12][13].)
• Public-procurement rules. Prevailing-wage requirements and project labor agreements on publicly funded work create built-in demand for registered apprentices.
• Employer economics. Apprenticeship is a hedge against wage inflation and turnover; when trained labor is scarce and expensive, employers are more willing to fund the pipeline.

Forward-looking judgment. Construction and infrastructure programs should stay attractive but cyclical. Health care, manufacturing, and IT offer more diversified demand, though nontraditional programs usually require more recruiting, curriculum development, and learner support.

7. Regulation

Apprenticeship is one of the most heavily framework-governed corners of education, but the framework is light-touch on the business itself.

• Foundational law. The National Apprenticeship Act of 1937 (the Fitzgerald Act) directs the Secretary of Labor to set and promote apprenticeship standards. It remains the governing statute; comprehensive reauthorization has repeatedly stalled in Congress [9][12].
• Federal administrator. Within DOL, the Employment and Training Administration (ETA) and its Office of Apprenticeship register programs, approve standards, and issue the nationally recognized completion credential [7][9].
• The rulebook. Federal standards live in the Code of Federal Regulations (CFR), chiefly 29 CFR Part 29 (labor standards for registration) and 29 CFR Part 30 (equal employment opportunity in apprenticeship) [10][11]. Part 29 addresses the skilled occupation, training term, RTI, wage progression, evaluations, supervision ratios, safety, and written agreements; the time-based benchmark is at least 2,000 hours of on-the-job learning, with 144 hours of RTI per year recommended, and a probationary period capped at 25% of the program or one year, whichever is shorter [10].
• State role. About half the states run their own State Apprenticeship Agencies (SAAs), which register and oversee programs locally under federal recognition [12]. State licensing, state tax credits, Workforce Innovation and Opportunity Act (WIOA) funding, and project-specific labor requirements add further layers.
• "Registered" status is the key regulatory asset. Registration unlocks grants, tax-credit and tuition-assistance eligibility, and access to prevailing-wage public work — but also creates compliance, reporting, wage, supervision, and quality obligations.
• Funding-vehicle regulation. Union training trusts are governed as multiemployer plans under the Labor Management Relations Act (Section 302(c)(5)) and ERISA fiduciary standards [15].
• Live policy debate. Modernization of the rules and the treatment of alternative, industry-run models have swung with administrations, creating funding and rule uncertainty for operators [12][13].

8. Competitive dynamics and consolidation

The defining feature is extreme fragmentation with no consolidation trend: a CR4 of 10.4%, top-50 share of 45.8%, and an HHI of 65.5 reflect hundreds of independent, geographically fixed local training centers, most of them nonprofit and not for sale [2]. The competition that matters is not corporate M&A but a structural union-versus-non-union contest for the same apprentices and the same public dollars. Non-union (open-shop) construction providers now make up the large majority of sponsors and have been growing completions faster than union programs [17]. On the union side, national joint programs like the Electrical Training Alliance retain enormous scale and infrastructure advantages — hundreds of centers, standardized curricula, deep employer-contribution bases [16].

Providers also compete against employer-run academies, community colleges, trade associations, nonprofit intermediaries, online training companies, and public workforce systems. What is defensible is employer relationships, completion outcomes, recognized credentials, local labor-market knowledge, and registration expertise — not generic course content.

Forward-looking judgment. Consolidation is most plausible in apprenticeship administration — online RTI, curriculum, assessment, data systems, and employer-intermediary platforms — where scale and software matter. Fragmentation should persist in local trade training, where ownership is permanently dispersed across employers, unions, public institutions, and nonprofits.

9. Risks

• Construction cyclicality. Because the industry is construction-weighted and union funding scales with hours worked, a downturn (higher rates, stalled projects) cuts contribution income and enrollment at the same time.
• Completion / attrition risk. Enrollment vastly exceeds completion. ABC has highlighted that of roughly 290,000 construction apprentices enrolled, fewer than 40,000 completed in a recent year, driving up cost-per-completer [17]; system-wide, ~680,000 active apprentices produced ~112,000 completers in FY2024 [7]. Weak wage progression and cancellations erode employer returns.
• Policy and funding volatility. The sector leans on federal and state grants and on registration rules that shift with administrations; the 1937 statute has never been comprehensively reauthorized, and expansion funding can change quickly [12][13][14].
• Employer-adoption risk. Programs fail economically if employers do not supply enough jobs, mentors, or repeat cohorts.
• Union-density erosion. Falling union membership shrinks the covered-hours base that funds JATC trusts — a slow structural headwind for the largest operators [17].
• Compliance and customer-concentration risk. Wage schedules, supervision ratios, safety, equal-opportunity rules, and reporting demand ongoing administration [10][11]; a provider dependent on a few employers, states, or grants has unstable revenue.
• Instructor supply. The same trades shortage that drives demand also makes it hard to hire experienced journeyworkers to teach.
• Measurement and proxy risk (for investors). Federal business statistics undercount public, nonprofit, union, nonemployer, and captive-employer activity [5], and public companies with apprenticeship programs may report little or no separate training revenue — so there is no clean listed vehicle, and adjacent stocks carry their own regulatory (Title IV, gainful-employment) and construction-cycle risks unrelated to apprenticeship itself.

10. How to invest and the outlook

Public-market routes (all indirect). Distinguish two groups. The training and workforce proxies are ManpowerGroup (MAN), Universal Technical Institute (UTI), and Lincoln Educational Services (LINC) — they train or place the same skilled-trades pipeline and increasingly bolt on employer partnerships; broader education names (ATGE, PRDO, LRN) touch the theme more loosely [26][27][28]. The apprenticeship-intensive employers — Quanta Services (PWR), EMCOR (EME), and Huntington Ingalls (HII) — run large captive training operations but are contractors first [29][30][31]. For any of them, review employer-funded versus student-funded revenue, apprentice-related disclosures, completion and retention data, exposure to construction cycles, and whether training is a revenue stream at all rather than an internal labor investment.

Private-market routes. Most real exposure is private and much of it non-equity: nonprofit union training trusts (not investable), employer-association programs, community-college partnerships, construction-training platforms like NCCER [34], and the venture- and PE-backed intermediaries (Multiverse, Guild, Franklin Apprenticeships, CareerWise, Penn Foster and peers) that are the closest thing to a scalable, ownable apprenticeship business — reachable through venture and growth equity, not public markets [18][32][33]. When underwriting one, test employer retention, cohort fill rates, completion, cost per completer, funding diversification, government receivables, registration status, outcomes, and the current ownership and debt structure. Employers themselves "invest" by funding programs to secure labor, not to earn a financial return.

Outlook. Constructive, but not a simple sector bet. The demand backdrop is genuinely structural — a persistent skilled-trades shortage layered on a construction and reindustrialization build-out, plus federal ambition to more than double active apprentices toward 1 million and fresh grant dollars behind it [13][14] — and employer ROI evidence supports long-term adoption [24]. The offsetting realities are just as concrete: the industry is tiny, fragmented, largely nonprofit, and offers no pure-play equity; funding is cyclical and politically exposed; and completion, not enrollment, is the binding constraint on whether the pipeline delivers workers [2][17]. The more attractive businesses are likely employer-linked intermediaries and specialized providers that combine recurring contracts with measurable outcomes; grant-dependent, generic training operators face greater funding, competition, and execution risk. Net: a powerful workforce story and a policy priority, but one an investor captures mostly at the edges — through workforce and trade-school equities, the contractors and manufacturers it feeds, and private intermediaries — rather than through the training establishments of NAICS 611513 themselves.

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Sources

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