About 150,104 graduate student employees were represented by unions in January 2024, roughly 38% of all graduate student employees in the United States and 133% more than the 64,400 counted in 2012 (National Center for the Study of Collective Bargaining in Higher Education and the Professions, 2024 Directory). Those unions are now writing the pay scales: Penn’s minimum doctoral stipend jumped from $40,608 to $49,000 in its first contract, and Caltech’s reaches $50,000 in Fall 2026. Yet the same $50,000 covers only about three-quarters of a single adult’s living wage in Boston or Los Angeles, and the federal benchmark for NIH-funded predoctoral trainees is $29,364. For the wider labor backdrop, see our union membership statistics. We aggregated data from the Hunter College National Center, the NSF Survey of Earned Doctorates, the Council of Graduate Schools, the Bureau of Labor Statistics, the MIT Living Wage Calculator, union and university announcements, and the other primary sources listed in the methodology.
TL;DR
- 150,104 graduate student employees were unionized as of January 2024, about 38% of the total (Hunter College National Center, 2024 Directory).
- Unionized graduate workers rose 133% from about 64,400 in 2012 (Hunter College National Center via Inside Higher Ed, 2024).
- 63,680 graduate student employees newly organized in 2021-2023 alone (Hunter College National Center via NEA Today, 2024).
- 26 new bargaining units covering over 40,000 graduate students, postdocs and researchers formed in 2023 (Hunter College National Center via Inside Higher Ed, 2024).
- The US union membership rate was 10.0% in 2025, versus 32.5% for education, training and library occupations (BLS, Union Members 2025).
- Penn’s minimum doctoral stipend rose 21% to $49,000, ratified by 99% of voters (The Daily Pennsylvanian, February 2026).
- Caltech’s graduate stipend reaches $50,000 in Fall 2026 (Caltech GPU-UAW ratification, 2025).
- Median annual wage for postsecondary teaching assistants: $43,750 (BLS OEWS, May 2023).
- A single adult needs $67,513 before taxes to meet the living wage in Boston (MIT Living Wage Calculator, February 2026).
- 20.4% of 2024 PhD recipients were funded mainly by teaching assistantships; 63.1% in math and statistics (NSF SED 2024).
- 73.4% of 2024 PhD recipients reported no graduate debt (NSF SED 2024).
- Doctoral programs accepted 19% of 899,141 applications in 2024 (Council of Graduate Schools, Graduate Enrollment and Degrees 2025).
1. The Scale of Graduate Worker Unionization
Graduate student employees are now among the most unionized workers in American higher education, and the curve bent sharply after 2020. Unionized graduate workers grew 133%, from about 64,400 in 2012 to 150,100 in early 2024, and about 38% of graduate workers are now covered (Inside Higher Ed, August 2024, reporting the Hunter College National Center’s 114-page Directory). The growth is not a slow accumulation: roughly 64,000 graduate workers unionized between 2021 and 2023, nearly triple the roughly 21,000 of the prior eight years combined, and 60% of the increase since 2012 occurred at private colleges and universities.
That last point matters most. Public universities organized under state labor laws for decades; the private-sector wave only became possible after the NLRB’s 2016 Columbia decision, which is why the legal fight in section 2 carries so much weight. Faculty unionization, by comparison, grew far more slowly, from about 374,000 to 402,000 members over the same span. Graduate workers also outpace the national labor market by a wide margin: the BLS puts the overall US union membership rate at 10.0% in 2025, with 32.5% for education, training and library occupations.
| Metric | Value | Source |
|---|---|---|
| Unionized graduate student employees, January 2024 | 150,104 | Hunter College National Center, 2024 Directory (via BestColleges and NEA Today) |
| Share of graduate student employees unionized | About 38% | Hunter College National Center, 2024 Directory |
| Unionized graduate workers, 2012 | About 64,400 (133% increase to 2024) | Hunter College National Center via Inside Higher Ed, 2024 |
| Newly organized graduate employees, 2021-2023 | 63,680 (vs about 21,000 in the prior eight years) | Hunter College National Center via NEA Today and Inside Higher Ed, 2024 |
| Share of growth since 2012 at private institutions | 60% | Hunter College National Center via Inside Higher Ed, 2024 |
| Unionized faculty / share of faculty | 402,217 / about 27% | Hunter College National Center via NEA Today, 2024 |
| Unionized undergraduate student workers | 3,515 in 19 unions across 9 states | Hunter College National Center via NEA Today, 2024 |
| US union membership rate, all workers / education occupations | 10.0% / 32.5% (2025) | BLS, Union Members 2025 |
Context note: the Directory also counts 11,471 unionized postdoctoral and academic researchers and 567,307 higher education workers in unions across all occupations (Hunter College National Center via BestColleges). NEA Today reports graduate employee units are primarily affiliated with the United Auto Workers.
2. New Bargaining Units and the NLRB Question
The organizing peak came in 2022 and 2023. In 2023 alone, 26 new bargaining units representing more than 40,000 graduate students, postdocs and researchers formed, along with 11 undergraduate-only units covering 1,925 workers (Inside Higher Ed, January 2024, citing the Hunter College National Center). Student worker bargaining units grew 54% between January 2022 and July 2023, and from 2022 through October 2024, 54 units representing more than 50,000 student workers were certified (Inside Higher Ed, December 2024).
The momentum now depends on a single precedent. The NLRB’s August 2016 Columbia University decision made student assistants at private universities employees under federal law; a 2019 proposal to reverse it was withdrawn in 2021. In August 2025 the board had only two of its five seats filled (The Nation, August 2025), and some campaigns pulled back: Berea College’s undergraduate organizers, who filed in March 2024, withdrew in January 2025 citing the risk of a changed precedent. In February 2026, a Cornell PhD candidate asked NLRB General Counsel Crystal Carey, confirmed in December 2025, to revisit Columbia (Cornell Daily Sun, March 2026). Public-university units, governed by state law, are insulated from that risk.
| Metric | Value | Source |
|---|---|---|
| New units formed in 2023 (grad students, postdocs, researchers) | 26 units, over 40,000 workers | Hunter College National Center via Inside Higher Ed, January 2024 |
| New undergraduate-only units, 2023 | 11 units, 1,925 workers | Hunter College National Center via Inside Higher Ed, January 2024 |
| Growth in student worker units, Jan 2022 to Jul 2023 | 54% | Hunter College National Center via Inside Higher Ed, January 2024 |
| Student worker units certified, 2022 to October 2024 | 54 units, over 50,000 workers | Inside Higher Ed, December 2024 |
| Pending California State University unit (early 2024) | Over 15,000 students | Hunter College National Center via Inside Higher Ed, January 2024 |
| Undergraduate unions, 2020 vs 2025 | 2 vs more than two dozen | The Nation, August 2025 |
| NLRB seats filled, August 2025 | 2 of 5 | The Nation, August 2025 |
| Cornell graduate union recognition vote | 96% approval (November 2023) | Cornell Daily Sun, March 2026 |
Context note: the Cornell challenge targets the contract’s agency fee of 1.44% of stipend, about 57 dollars a month on a $47,548 graduate research assistant stipend (Cornell Daily Sun). BestColleges reports typical graduate union dues of 1.5% to 2.5% of gross pay, citing the University of Oregon’s Graduate Teaching Fellows Federation.
3. First Contracts at Private Universities: The $50,000 Line
First contracts at private research universities are converging on a minimum stipend around $50,000. Penn’s graduate union won a 21% jump in the minimum doctoral stipend, from $40,608 to $49,000, ratified 2,604 to 31 (99%) with 77% turnout (The Daily Pennsylvanian, February 2026). That single contract moved Penn from 14th to 7th among 16 private universities on minimum pay, in a comparison that lists Chicago, Northwestern, Cornell, Johns Hopkins, Yale, Princeton and Brown with 2025-26 minimums from $46,350 to $52,198 (The Daily Pennsylvanian).
The pattern repeats elsewhere. Caltech’s contract lifts the graduate stipend to $48,244 in Fall 2025 and $50,000 in Fall 2026, approved by 1,042 voters, an 86% margin (Caltech GPU-UAW). Harvard set a $50,000 minimum from July 2024, above the union’s own $48,779 request, after a petition with more than 1,600 signatures (The Harvard Crimson, December 2023). Universities without contracts feel the pressure too: pay floors set at unionized peers become recruiting benchmarks for everyone else.
| Metric | Value | Source |
|---|---|---|
| Penn minimum doctoral stipend | $40,608 to $49,000 (April 2026), then $50,470 (2027-28) | The Daily Pennsylvanian, February 2026 |
| Penn ratification vote | 2,604 yes, 31 no (99%), 77% participation, 3,700+ workers | The Daily Pennsylvanian, February 2026 |
| Penn rank on minimum pay among 16 private peers | 7th (was 14th) | The Daily Pennsylvanian, February 2026 |
| Minimum stipend range, 7 named private peers | $46,350 to $52,198 (2025-26) | The Daily Pennsylvanian, February 2026 |
| Caltech graduate stipend | $48,244 (Fall 2025), $50,000 (Fall 2026) | Caltech GPU-UAW ratification, 2025 |
| Caltech ratification | 1,042 votes to ratify, 86% margin; $800 bonus | Caltech GPU-UAW ratification, 2025 |
| Harvard PhD minimum stipend | $50,000 from July 1, 2024 (union asked $48,779) | The Harvard Crimson, December 2023 |
| MIT contract wage increases | 3.5% (June 2024), 3.25% (June 2025) | MIT GSU-UE collective bargaining agreement, Article 21 |
Context note: Penn’s percentage is reported as both 21% and 22% in Daily Pennsylvanian coverage; the arithmetic ($49,000 divided by $40,608) gives 20.7%. MIT’s contract (MIT GSU, Article 21) applies its raises to minimum and maximum rates for 20-hour weekly appointments.
4. Public Universities: Strikes, Raises and Smaller Stipends
The largest graduate labor action in US history came from a public system. The University of California strike of 2022 involved about 48,000 academic workers, and the contracts that ended it after 40 days covered about 36,000 graduate workers, with raises of up to 80% for the lowest paid (NPR, December 2022). Teaching assistant minimums were set to reach at least $36,000 by the end of 2024 and graduate student researcher minimums at least $40,000; a separate group of about 12,000 postdocs and academic researchers won a 29% raise.
Smaller public systems are bargaining from a much lower base. The University of Maine System’s first contract, ratified 438 to 3 in December 2025, raises the doctoral stipend at UMaine from $20,000 to $23,500 and the master’s stipend from $17,000 to $21,000 for nine-month, 20-hour appointments, covering about 900 workers (University of Maine, December 2025). New York’s SUNY system ratified a three-year deal for more than 4,500 graduate and teaching assistants in June 2025 (Office of the Governor of New York). The gap between a $23,500 Maine stipend and a $50,000 Caltech one shows how much institution type still drives pay.
| Metric | Value | Source |
|---|---|---|
| UC academic workers on strike, 2022 | About 48,000 (about 36,000 graduate students) | BestColleges, citing strike records |
| UC strike length | 40 days, ended December 2022 | NPR, December 2022 |
| UC teaching assistant minimum by end of 2024 | At least $36,000 (raises up to 80% for lowest paid) | NPR, December 2022 |
| UC graduate student researcher minimum by end of 2024 | At least $40,000 | NPR, December 2022 |
| UMaine doctoral / master’s stipend (9-month, 20 hrs/week) | $20,000 to $23,500 / $17,000 to $21,000 (July 2026) | University of Maine, December 2025 |
| UMaine System contract vote / workers covered | 438 to 3 / about 900 | University of Maine, December 2025 |
| SUNY graduate and teaching assistants under new contract | More than 4,500 (CWA Local 1104) | Office of the Governor of New York, June 2025 |
Context note: other strikes listed by BestColleges include Columbia (1,804 workers, 10 weeks, 2021-22), Harvard (1,900, 3 days, 2021), Indiana University Bloomington (1,100, 4 weeks, 2022) and Temple (300, 6 weeks, 2023). UC figures are nine-month, half-time rates, so they are not directly comparable to twelve-month private stipends.
5. Stipends vs the Cost of Living
A stipend that clears a national median can still fall well short locally. In Boston, a single adult with no children needs $67,513 a year before taxes to reach a living wage, so Harvard’s $50,000 minimum covers about 74% of it (50,000 / 67,513) (MIT Living Wage Calculator, Boston metro, February 2026). Caltech’s $50,000 covers about 78% of the $64,041 needed in Los Angeles, while Penn’s $49,000 covers about 93% of Philadelphia’s $52,792. The new contracts have closed most of the gap in mid-cost metros, not in the most expensive ones.
Federal benchmarks sit lower still. The NIH Kirschstein-NRSA predoctoral stipend is $29,364 for FY2026 under notice NOT-OD-26-044 (UCLA Office of Contract and Grant Administration, March 2026), and the NSF Graduate Research Fellowship pays a $37,000 stipend plus a $16,000 cost-of-education allowance to the institution for an estimated 1,500 awards (NSF GRFP). Across the occupation, the BLS reports a median annual wage of $43,750 for postsecondary teaching assistants (BLS OEWS, May 2023). For the minimum-pay debate outside campuses, see our minimum wage statistics.
| Metric | Value | Source |
|---|---|---|
| Living wage, single adult: Boston / Los Angeles | $67,513 / $64,041 per year before taxes | MIT Living Wage Calculator, February 2026 |
| Living wage, single adult: Philadelphia / Ithaca / Bangor | $52,792 / $51,169 / $49,871 | MIT Living Wage Calculator, February 2026 |
| Living wage, 1 adult and 1 child: Philadelphia / Boston | $96,665 / $128,364 | MIT Living Wage Calculator, February 2026 |
| Stipend as share of local single-adult living wage | Harvard 74%, Caltech 78%, Penn 93% (our calculation) | Stipends from section 3; MIT Living Wage Calculator |
| NIH NRSA predoctoral stipend, FY2026 | $29,364 (postdoc level 0: $63,480) | NIH NOT-OD-26-044 via UCLA OCGA, March 2026 |
| NSF GRFP stipend / cost-of-education allowance | $37,000 / $16,000; about 1,500 awards a year | NSF GRFP program page, 2026 |
| Postsecondary TA wages: 10th / median / 90th percentile | $29,540 / $43,750 / $73,450 | BLS OEWS, May 2023 |
Context note: Cornell’s $47,548 graduate research assistant stipend (Cornell Daily Sun, 2026) is about 93% of Ithaca’s $51,169 living wage. Graduate workers with children face the steepest gap: Penn’s minimum covers about half of the $96,665 Philadelphia figure for one adult and one child.
6. How Teaching Assistantships Fund the PhD
Teaching assistantships are the financial backbone of some disciplines and a minor line item in others. Across 51,407 research doctorate recipients reporting in 2024, 20.4% named teaching assistantships as their primary source of support, but the share was 63.1% in mathematics and statistics and 39.6% in the humanities (NSF NCSES, Survey of Earned Doctorates 2024, Table 4-1). Engineering sits at the other end, at 10.3%, because 60.6% of engineering PhDs were supported mainly by research assistantships tied to grants.
That split explains why TA pay is a labor issue first in math, humanities and social science departments: teaching is the job that funds the degree. It also explains the exposure to federal grant cuts in lab sciences, where research assistantships dominate. International students lean harder on assistantships, with 23.3% of temporary visa holders funded primarily by TAships versus 18.9% of US citizens and permanent residents, a dependence also visible in our international students statistics.
| Metric | Value | Source |
|---|---|---|
| Primary support: teaching assistantships, all fields | 20.4% | NSF NCSES, SED 2024, Table 4-1 |
| Primary support: research assistantships / fellowships / own resources | 36.1% / 24.2% / 15.0% | NSF NCSES, SED 2024, Table 4-1 |
| TA as primary support: mathematics and statistics | 63.1% | NSF NCSES, SED 2024, Table 4-1 |
| TA as primary support: humanities / social sciences / psychology | 39.6% / 33.6% / 23.9% | NSF NCSES, SED 2024, Table 4-1 |
| TA as primary support: physical sciences / engineering | 24.4% / 10.3% | NSF NCSES, SED 2024, Table 4-1 |
| TA as primary support: temporary visa holders vs US citizens and permanent residents | 23.3% vs 18.9% | NSF NCSES, SED 2024, Table 4-1 |
| Own resources as primary support: education doctorates | 46.7% | NSF NCSES, SED 2024, Table 4-1 |
Context note: the SED counted 58,131 research doctorates in academic year 2024, 45,929 of them in science and engineering, with a 91.5% response rate (NSF NCSES, SED 2024). Postsecondary teaching assistant employment was 145,960 in May 2023, with California (23,980), Michigan (18,010) and New York (16,200) the largest employers (BLS OEWS).
7. Debt, Admissions and the Graduate Pipeline
Funded doctoral programs mostly keep PhD students out of debt, and the exceptions track the fields with the least assistantship funding. 73.4% of 2024 research doctorate recipients reported no graduate debt, and the median among those who borrowed was $35,000 (NSF NCSES, SED 2024, Table 4-4). Math and statistics, where TAships are most common, had 86.6% debt-free graduates; psychology, where 33.6% relied mainly on their own resources, had only 50.1% debt-free and a $65,000 median among borrowers. For the broader borrowing picture, see our student loan debt statistics.
Competition for funded slots is intense. Doctoral programs accepted 168,015 of 899,141 applications in 2024, or 19%, and only 12% in social and behavioral sciences (Council of Graduate Schools, Graduate Enrollment and Degrees 2025). CGS’s 536 responding institutions awarded 86,212 doctoral degrees and reported fewer degrees conferred at both levels than in 2023, and it warns that 2025 brought research grant terminations and visa restrictions. Enrollment trends appear in our college enrollment statistics.
| Metric | Value | Source |
|---|---|---|
| PhD recipients with no graduate debt | 73.4% (2024) | NSF NCSES, SED 2024, Table 4-4 |
| Median graduate debt among borrowers / cumulative education debt | $35,000 / $35,000 | NSF NCSES, SED 2024, Table 4-4 |
| No graduate debt: math and statistics / humanities / psychology | 86.6% / 66.1% / 50.1% | NSF NCSES, SED 2024, Table 4-4 |
| Doctoral applications / acceptance rate | 899,141 / 19% (168,015 accepted) | CGS, Graduate Enrollment and Degrees 2025 |
| First-time graduate enrollees / share in doctoral programs | 537,850 / 17% | CGS, Graduate Enrollment and Degrees 2025 |
| Doctoral degrees awarded, 2023-24 (responding institutions) | 86,212 | CGS, Graduate Enrollment and Degrees 2025 |
| International share of graduate enrollment, Fall 2024 | 23% | CGS, Graduate Enrollment and Degrees 2025 |
| Projected fall 2025 decline in international enrollment (undergraduate and graduate) | Between 30% and 40% | NAFSA projection, cited by CGS 2025 |
Context note: CGS’s institutional sample differs from the SED census, so its 86,212 doctoral degrees are not directly comparable with the SED’s 58,131 research doctorates. Doctoral first-time enrollment in 2024 was 44% men (CGS).
Summary: Graduate Teaching Assistant Stipends and Unions by the Numbers
| Metric | Value | Source |
|---|---|---|
| Unionized graduate student employees | 150,104 (January 2024) | Hunter College National Center, 2024 Directory |
| Share of graduate employees unionized | About 38% | Hunter College National Center, 2024 Directory |
| Growth in unionized graduate workers since 2012 | 133% | Hunter College National Center via Inside Higher Ed |
| Newly organized graduate employees, 2021-2023 | 63,680 | Hunter College National Center via NEA Today |
| Student worker units certified, 2022 to October 2024 | 54 units, 50,000+ workers | Inside Higher Ed, December 2024 |
| US union membership rate, 2025 | 10.0% | BLS, Union Members 2025 |
| Penn minimum doctoral stipend | $49,000 (from $40,608) | The Daily Pennsylvanian, February 2026 |
| Caltech graduate stipend, Fall 2026 | $50,000 | Caltech GPU-UAW, 2025 |
| Harvard PhD minimum stipend | $50,000 | The Harvard Crimson, December 2023 |
| UC TA minimum after 2022 strike | At least $36,000 by end of 2024 | NPR, December 2022 |
| UMaine doctoral stipend (9-month) | $23,500 | University of Maine, December 2025 |
| Boston living wage, single adult | $67,513 | MIT Living Wage Calculator, 2026 |
| NIH NRSA predoctoral stipend, FY2026 | $29,364 | NIH via UCLA OCGA, 2026 |
| NSF GRFP stipend | $37,000 | NSF, 2026 |
| Median postsecondary TA wage | $43,750 | BLS OEWS, May 2023 |
| PhD recipients funded mainly by TAships | 20.4% | NSF SED 2024 |
| Math and statistics PhDs funded mainly by TAships | 63.1% | NSF SED 2024 |
| PhD recipients with no graduate debt | 73.4% | NSF SED 2024 |
| Doctoral acceptance rate | 19% | CGS, 2025 |
Methodology and Sources
Every figure above was read during research for this article. The Hunter College National Center’s own site and its 2024 Directory PDF could not be read by our tools (the site returned 403 errors and the PDF did not render), so Directory figures are cited through reporting that names the Directory as its source. Where we computed a ratio, the arithmetic is shown inline.
- Hunter College National Center for the Study of Collective Bargaining in Higher Education and the Professions, 2024 Directory of Bargaining Agents and Contracts, as reported by Inside Higher Ed (August 2024), Inside Higher Ed (January 2024), NEA Today (December 2024), Higher Education Labor United (January 2025) and BestColleges (October 2025)
- Inside Higher Ed, higher ed unionization under Trump (December 2024)
- NLRB context: The Nation (August 2025), Cornell Daily Sun (March 2026)
- Contracts: The Daily Pennsylvanian, tentative agreement (February 2026), ratification (February 2026), peer comparison (February 2026); Caltech GPU-UAW ratification; The Harvard Crimson (December 2023); MIT GSU contract, Article 21; University of Maine (December 2025); Office of the Governor of New York, SUNY agreement (June 2025); NPR, UC strike ends (December 2022)
- Cost of living and benchmarks: MIT Living Wage Calculator metro pages for Boston, Los Angeles, Philadelphia, Ithaca and Bangor; NSF GRFP program page; NIH NOT-OD-26-044 via UCLA OCGA (March 2026)
- Bureau of Labor Statistics: OEWS, Teaching Assistants, Postsecondary, May 2023, Union Members 2025
- NSF National Center for Science and Engineering Statistics: Survey of Earned Doctorates 2024, Table 4-1, primary source of support, Table 4-4, education-related debt
- Council of Graduate Schools: Graduate Enrollment and Degrees 2025 (November 2025)
- Data watch: The Hunter College figures are as of January 1, 2024 (most recent available Directory); Inside Higher Ed rounds the total to 150,100 while BestColleges reports 150,104, and the 2021-2023 increase appears as roughly 64,000 (Inside Higher Ed) and 63,680 (NEA Today). The 48,000 UC strike figure comes from BestColleges, while NPR reports about 36,000 workers covered by the graduate contracts plus about 12,000 postdocs and researchers. Penn’s raise is reported as 21% and 22%; the arithmetic gives 20.7%. The BLS OEWS figures are from May 2023 because newer occupation pages did not load; the BLS has since published May 2025 estimates. The NIH notice itself returned a 403 error, so the NRSA figure is cited through UCLA’s research office. The NLRB website was unreachable during research, so board status is cited through The Nation (August 2025) and may have changed since. A Duke contract figure and a per-sector (public vs private) union count were dropped because we could only see them in search snippets. UC, UMaine and many public-university stipends are nine-month or part-time rates and should not be compared directly with twelve-month private stipends. Strike data in section 4 dates from 2021-2023.
Last updated: October 3, 2026. We update this roundup quarterly, and the next refresh is expected when NSF NCSES releases the 2025 Survey of Earned Doctorates and the Council of Graduate Schools publishes its Fall 2025 enrollment report.