The Workforce AI Index · Financial Services
Aon plc (AON)
Insurance broker and consultant, split by segment revenue. Read October 1, 2026 from the annual report for the period ending 2025-12-31, filed 2026-02-13. Ranked 11 of the 15 Financial Services companies read so far, by the share within reach now: the sector.
The filing states approximately 60,000 employees in more than 120 countries and nothing by segment, so the patterns follow segment revenue, broking and consulting (c).
The figures on this page come from the company's own annual report and from BLS staffing patterns for its industries, never from a roster. They are estimates with a stated method. Nothing here says what the company will do: within reach is not a forecast of jobs lost or of savings.
What follows from the reading
Share of working time within reach of AI, on the long-run pace at four in five: 35% now, 54% at the end of 2027, 63% at the end of 2028, 65% at the end of 2030. By the patterns, the work is about 65% desk work, 29% people work and 6% body work. These are the site's industry estimates weighted by the shares below: estimates with a stated method and range, not a forecast of what the company will do. By the same patterns, at the end of 2028 about 35% of the working time stays with people (conversation, in-person and hands-on work), 53% becomes checking a model's work and 9% could be handed over with lighter checks, from the industries' own figures, not the company's roles.
Headcount
60,000 employees as of 2025-12-31 (stated). The filing gives no count by country; the United States is 53% of revenue.
The filing: “As of December 31, 2025, we employed approximately 60,000 employees and conducted our operations in more than 120 countries and sovereignties.”
The workforce as industry patterns
| Pattern | Share | Reason, from the filing |
|---|---|---|
| Agencies, Brokerages, and Other Insurance Related Activities | 75% | By revenue (c): the Risk Capital segment at 66% of revenue, commercial risk and reinsurance broking, plus the benefits brokerage inside Human Capital, with no count by segment. |
| Management, Scientific, and Technical Consulting Services | 25% | By revenue (c): the consulting inside the Human Capital segment at 34% of revenue, retirement, investment and talent advisory work, with no stated count. |
What the filing says about the workforce: Approximately 60,000 employees in more than 120 countries, unchanged from 2024 after the NFP acquisition took the count from 50,000.
Companies read with the same leading pattern
Other companies whose largest staffing pattern is also Agencies, Brokerages, and Other Insurance Related Activities, largest first, each read from its own annual report. Within reach now and at the end of 2028, long-run pace, four in five.
- Marsh & McLennan Companies, Inc. (MRSH, 95,000 employees)33% now, 63% by 2028
- Arthur J. Gallagher & Co. (AJG, 72,000 employees)38% now, 62% by 2028
What the filing says about AI
14 sentences in the filing name AI. The filing names AI in 14 sentences, as regulation and competition: AI among the areas of data regulation that could raise costs, and InsurTech competitors using AI.
- “Potential factors, which may be revised or supplemented in subsequent reports filed or furnished with the Securities and Exchange Commission, that could impact results include: changes in the competitive environment, due to macroeconomic conditions or otherwise, or damage to our reputation; fluctuations in currency exchange, interest, or inflation rates that could impact our financial condition...”
- “Regulation in the areas of data privacy, data protection, data management, data transfer, data localization, artificial intelligence, and cybersecurity could increase our costs and affect or limit our business opportunities.”
- “Further, new and non- traditional competitors (including "InsurTech" firms utilizing artificial intelligence or 11 other advanced technologies), our clients' increasing ability and determination to self-insure, and capital market alternatives to traditional insurance and reinsurance markets create an even more dynamic, competitive, and innovative market environment that could affect our business.”
- “If we are unsuccessful in innovating, if we cannot innovate as quickly as our competitors, if we are not able to make sufficient investment in innovation, if new or existing competitors develop more cost-effective or efficient technologies or cause disintermediation (including through the use of artificial intelligence or other emerging technologies), or if our ideas are not accepted in the mar...”
- “Innovations in software, cloud computing, data and analytics, generative and agentic artificial intelligence, or other technologies that alter how our services are delivered could significantly undermine our investment in the business if we are slow to innovate or unable to take advantage of these developments.”
Headcount by filing year
As reported in each year's annual report, with the filing. A year marked not read had no figure the reading could take from the report's text.
| Period | Employees | Filed | Filing |
|---|---|---|---|
| 2025-12-31 | 60,000 | 2026-02-13 | 10-K |
| 2024-12-31 | 60,000 | 2025-02-18 | 10-K |
| 2023-12-31 | 50,000 | 2024-02-16 | 10-K |
| 2022-12-31 | 50,000 | 2023-02-17 | 10-K |
| 2021-12-31 | 50,000 | 2022-02-18 | 10-K |
| 2020-12-31 | 50,000 | 2021-02-19 | 10-K |
| 2019-12-31 | 50,000 | 2020-02-14 | 10-K |
| 2018-12-31 | 50,000 | 2019-02-19 | 10-K |
| 2017-12-31 | 50,000 | 2018-02-20 | 10-K |
| 2016-12-31 | 69,000 | 2017-02-23 | 10-K |
| 2015-12-31 | 69,000 | 2016-02-22 | 10-K |
| 2014-12-31 | 69,000 | 2015-02-24 | 10-K |
| 2013-12-31 | 66,000 | 2014-02-18 | 10-K |
| 2012-12-31 | 66,000 | 2013-02-22 | 10-K |
| 2011-12-31 | 62,000 | 2012-02-24 | 10-K |
| 2010-12-31 | 59,000 | 2011-02-25 | 10-K |
| 2009-12-31 | 36,200 | 2010-02-26 | 10-K |
| 2008-12-31 | 37,700 | 2009-03-02 | 10-K |
| 2007-12-31 | 42,500 | 2008-02-28 | 10-K |
| 2006-12-31 | 43,100 | 2007-03-01 | 10-K |
| 2005-12-31 | 46,600 | 2006-03-09 | 10-K |
| 2004-12-31 | 48,000 | 2005-03-16 | 10-K |
| 2003-12-31 | 54,000 | 2004-03-11 | 10-K |
| 2002-12-31 | 55,000 | 2003-03-26 | 10-K |
| 2001-12-31 | 53,000 | 2002-03-15 | 10-K |
| 2000-12-31 | 51,000 | 2001-03-27 | 10-K |
| 1999-12-31 | 50,000 | 2000-03-24 | 10-K |
| 1998-12-31 | 44,000 | 1999-03-29 | 10-K |
| 1997-12-31 | 40,000 | 1998-03-31 | 10-K |
| 1996-12-31 | 28,000 | 1997-03-26 | 10-K |
| 1995-12-31 | 27,000 | 1996-04-01 | 10-K405 |
| 1994-12-31 | 18,000 | 1995-03-31 | 10-K405 |
Limits of this reading
- The filing counts no people by segment or by country; the pattern shares rest on segment revenue and description (c).
- The U.S. share is not stated.
Source: the company's annual report on EDGAR, accession 0001628280-26-008116, the filing. Read by Claude Fable 5.1 under rubric version 1, by the method. A company can write to info@stratussc.com to have its reading checked against its filing.
Questions about this company
- How much of Aon plc's working time is within reach of AI?
- An estimated 35% now and 63% by the end of 2028, on METR's long-run pace at four in five, from the workforce Aon plc's own annual report describes and BLS staffing patterns for its industries, never from a roster. It is an estimate with a stated method. It is not a forecast of jobs lost or of savings, and it says nothing about what the company will do.
- How many people does Aon plc employ?
- 60,000 as of December 31, 2025, as its annual report for the period ending December 31, 2025 states.
- What kinds of work make up Aon plc's workforce?
- Read from its annual report as a blend of 2 industry staffing patterns, the largest Agencies, Brokerages, and Other Insurance Related Activities; by those patterns the work is about 65% desk work, 29% people work and 6% body work. Each share has a one-sentence reason on this page that can be checked against the filing.
- What does Aon plc's annual report say about AI?
- 14 sentences in the filing name AI. They are counted and quoted on this page, never judged: a count says how much a filing talks about AI, not what the company does with it.
- How is this estimated?
- Claude Fable 5.1 read the annual report under the Index's written rubric (version 1) on October 1, 2026: the stated headcount, the share in the U.S. when stated, and the workforce as a blend of industry staffing patterns. The estimates are the site's industry estimates weighted by those shares, from O*NET tasks with estimated lengths and METR's measurements of how long a task AI models can finish. A company can write to info@stratussc.com to have its reading checked against its filing.
Embed these figures on your site
A small card with the share of working time within reach now and at the end of 2027, 2028 and 2030, the date and a link back. Free under CC BY 4.0; the card carries the credit.