General · EdgepediaSeptember 17, 20268 min read

Pro bono

Pro bono is professional work undertaken voluntarily and without payment, most commonly free legal services provided by lawyers to people who cannot afford them. The term is short for the Latin pro bono publico, traditionally rendered "for the public good"; one legal-history treatment notes that the literal translation is "for the good of the state" rather than "for the good of the public" as is often assumed today¹. In modern usage the phrase refers chiefly to legal service provided voluntarily by law firms, law schools, and attorneys without monetary compensation², and by extension to skills-based volunteering by other professionals, such as accountants, designers, and marketers, who donate their expertise to nonprofit organizations³.

Key fact	Detail
Meaning	Short for Latin pro bono publico; in legal usage, professional service provided voluntarily without compensation²
ABA benchmark	Model Rule 6.1 urges every lawyer to aspire to at least 50 hours of pro bono publico legal services per year; the responsibility is aspirational and not enforced through discipline⁴
Participation	More than 75% of American attorneys provide pro bono service at some point in their careers, per the ABA's Supporting Justice V report⁵
Law firm volume	Law Firm Pro Bono Challenge signatories (firms with 50 or more attorneys) reported 5.14 million hours of pro bono in 2025⁶
Average effort	Reliable estimates put American lawyers' average pro bono contribution at about half an hour per year, broadly defined⁷
Valuation benchmark	Traditional volunteer time was valued at $24.14 per hour by Independent Sector in April 2018, a baseline used when pricing pro bono projects⁸
Global reach	The Pro Bono Institute and Latham & Watkins survey of pro bono practices grew from 11 jurisdictions in its first edition (2005) to 84 jurisdictions in the 2016 edition⁹

Meaning and scope

The core conception of pro bono legal activity is the provision of free legal assistance to poor people¹⁰. Definitions vary by jurisdiction. In the United Kingdom, the Joint Pro Bono Protocol defines pro bono work as "legal advice or representation provided by lawyers in the public interest, including to individuals, charities and community groups who cannot afford to pay and where alternative means of funding are not available"¹¹. In the United States, ABA Model Rule 6.1 asks each lawyer to render a substantial majority of the 50 annual hours without fee to persons of limited means, or to charitable, religious, civic, community, governmental, and educational organizations in matters designed primarily to address the needs of persons of limited means⁴.

Rule 6.1, the no-fee-or-expectation-of-fee requirement applies only to the substantial majority of the aspirational hours; an anticipated fee that goes uncollected does not qualify, although statutory fees awarded in a case accepted as pro bono do not disqualify it⁴^•²². The rule also counts reduced-fee service, work on civil rights and civil liberties matters, and activities that improve the law, the legal system, or the legal profession toward the aspirational total⁴.

Outside law, the term covers donated professional services generally. Skills-based volunteerism supplies nonprofits with external expertise in functions such as finance, marketing, and technology that they would otherwise have to buy, complementing traditional hands-on volunteering³.

History

Lawyers' free service has old roots but a recent vocabulary. According to the legal scholar Judith Maute, the phrase "pro bono publico" was historically used in a general sense, referring to the broad concept of what was within the public interest; only in the 1950s did "pro bono" come to refer specifically to uncompensated legal representation¹². In the United States, organized pro bono programs have existed for over a century¹³, and in the late nineteenth century legal aid offices staffed by full-time lawyers and paid for through charitable contributions opened in many American cities¹⁴. Reginald Heber Smith's 1919 book Justice and the Poor, condemning the judicial system's treatment of the poor, was a significant development of that period¹².

Law students have provided free legal assistance to the poor for over 100 years. The first recorded volunteer law student group was a law club at the University of Pennsylvania, which created a "legal aid dispensary" in 1893; the first formal law school pro bono program came in 1987, when the faculty of Tulane Law School, led by Dean John Kramer, instituted a 20-hour pro bono graduation requirement¹⁵.

The shape of American pro bono changed markedly in recent decades. For most of American legal history it was ad hoc and individualized, dispensed informally as professional charity; within about twenty-five years before 2004 it became centralized and streamlined, distributed through an elaborate institutional structure, and emerged as the dominant means of dispensing free representation to poor and underserved clients¹⁶.

Organization in the United States

Institutional infrastructure. The American Bar Association's Standing Committee on Pro Bono and Public Service works to expand delivery of legal services to the underserved through volunteer efforts, sponsors the annual Pro Bono Publico Awards, and co-sponsors the Equal Justice Conference with the National Legal Aid and Defender Association⁵. The ABA House of Delegates adopted the revised Standards for Programs Providing Civil Pro Bono Legal Services to Persons of Limited Means at its 2013 Annual Meeting; the Standards set out the elements of an effective program, including recruiting volunteers, meeting clients' needs, and delivering quality service¹⁷.

For large firms, the Pro Bono Institute's Law Firm Pro Bono Challenge serves as an industry benchmark for participation among firms with 50 or more attorneys, aiming to integrate pro bono into the practice, philosophy, and culture of firms. Its 2026 report, based on 2025 data, recorded 5.14 million pro bono hours from signatories and signs of stabilization, with more firms meeting the Challenge goal and increased charitable giving⁶.

Mandatory reporting. Voluntary aspiration is distinct from mandatory disclosure. Beginning with the 2026 licensing fee cycle, California attorneys must report their pro bono and reduced-fee legal services hours to the State Bar, covering hours completed in the preceding calendar year and reported by March 30 alongside other licensing requirements. The State Bar collects the information to understand how these services are provided across the profession¹⁸.

How much pro bono happens

Participation is broad but thin. More than 75% of American attorneys provide pro bono service at some point in their careers, yet reliable estimates put the nationwide average at about half an hour of pro bono work per year when broadly defined⁷. Concentration explains the gap: large-firm programs account for a large share of hours, with Challenge signatories alone reporting 5.14 million hours in 2025⁶. The American Academy of Arts and Sciences notes that law firm pro bono services now exceed in value the entire federal legal-services budget⁷.

Valuing the work. Programs and nonprofits routinely price pro bono engagements. Independent Sector's April 2018 estimate valued traditional volunteer time at $24.14 per hour, and pro bono valuations typically scale that baseline to the market rate for the specific professional service involved⁸. Not everything a professional does for free qualifies: classification guidance prepared for the Thomson Reuters Foundation's pro bono index treats non-legal volunteering, such as a law firm partner reading to children at an after-school club, as falling outside qualifying pro bono, while legal work such as a paralegal preparing court bundles for a civil liberties case on behalf of an NGO counts¹⁹.

Global development

Pro bono practice has spread well beyond the United States and England. The 2016 survey by the Pro Bono Institute and Latham & Watkins covered 84 jurisdictions across Europe, Asia and the Pacific, the Americas, Africa, and the Middle East, and found that the conversation had shifted from whether pro bono is permissible under local rules to how representations can be undertaken⁹. In England and Wales, the Law Society, the Bar Council, and the Chartered Institute of Legal Executives maintain guides, a pro bono manual, and a Pro Bono Recognition List to support and recognize this work²⁰.

International guidance sets a limit on what pro bono can do: private pro bono programs should not be expected to replace the national legal aid system or take over the government's responsibility for ensuring equal access to justice for all citizens²¹.

References

Initially written Sep 17, 2026 · Reviewed: Sep 17, 2026; Oct 25, 2026 · Edited: Oct 15, 2026; Oct 25, 2026