Aon Retirement Pension Plan
ERISA Form 5500 plan record drawn from DOL EBSA — verify with linked source filings below.
Sponsored by Aon Corporation · Illinois · Finance & Insurance
What the 2023 filing shows
Aon Retirement Pension Plan holds $1.5B for 1,928 participants — about $783,466 per participant, down 34.2% over the 2022 plan year.
- $1.5B
- total plan assets (2022 EOY)
- 1,928
- covered participants
- $783,466
- avg assets per participant
- -34.2%
- assets change YoY
The plan reported a net loss of $884M for the year — a single-year figure driven by markets and benefit payments, not a measure of plan health.
What the Filing Says About Aon Retirement Pension Plan
Aon Retirement Pension Plan is a Defined Benefit (Pension) retirement plan sponsored by Aon Corporation, headquartered in Illinois. As of the 2022 Form 5500 filing, the plan reports $1.5B in total end-of-year assets and covers 1,928 participants across the Finance & Insurance industry. The sponsor's EIN on file with the U.S. Department of Labor is 363051915, and the plan has been effective since 2020-01-01. Its filing status is currently FILING RECEIVED.
Year over year, total assets moved from $2.3B at the beginning of 2022 to $1.5B at year-end — a decline of 34.2%. Net assets (after liabilities) closed the year at $1.5B, with reported net income of $-884,013,039 driven by investment returns, contributions received, and benefit payments during the period. These figures reflect what the plan administrator certified on Schedule H or Schedule I of the Form 5500 annual return and can be compared against 2 prior plan-year filings from the same sponsor shown below.
Asset totals and participant counts reflect a single plan year snapshot and can change materially with market conditions, plan mergers, or workforce changes. Fields such as "net income" include both realized investment performance and contribution/distribution flows — a single-year figure does not by itself indicate plan health or participant outcomes. This page summarizes public DOL disclosures for research and educational purposes only and is not retirement, tax, legal, or financial advice. Before making decisions about your own retirement benefits or evaluating an employer's plan, verify the underlying filing directly via the DOL EFAST2 system and consult a qualified professional.
Financial Summary (2023)
| Total Assets (Beginning of Year) | $2.3B |
| Total Assets (End of Year) | $1.5B |
| Net Assets (End of Year) | $1.5B |
| Net Income | $-884,013,039 |
| Plan Type | Defined Benefit (Pension) |
| Employer EIN | 363051915 |
| Plan Effective Date | 2020-01-01 |
| Filing Status | FILING RECEIVED |
Sponsor Plan History (Aon Corporation)
| Year | Plans | Participants | Total Assets |
|---|---|---|---|
| 2022 | 3 | 14,536 | $6.9B |
| 2023 | 2 | 15,754 | $7.8B |
| 2024 | 2 | 15,620 | $8.2B |
Nearby Defined Benefit (Pension) Plans in Illinois
Peer Defined Benefit (Pension) plans — same state, same plan type — ranked by total assets.
- State Farm Insurance Companies Retirement Plan for United States Employees $35.2B · 45,001
- John Deere Pension Plan for Salaried Employees $8.0B · 16,346
- Abbott Laboratories Annuity Retirement Plan $7.8B · 17,382
- Exelon Corporation Retirement Program $6.4B · 9,116
- Abbvie Pension Plan $4.4B · 14,619
Related Data
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Frequently Asked Questions
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Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2022.
Source: DOL EFAST2 filing system (efast.dol.gov) — original filing retrieval by EIN 363051915.
Reference: IRS Publication 560 — Retirement Plans for Small Business, contribution-limit rules.
Reference: IRS Publication 590-B — Distributions from IRAs, RMD rules under SECURE Act 2.0.
Read our methodology — how this data is sourced, computed, and verified.