Congratulations to everyone celebrating a OneBeacon milestone anniversary in March 2013!
| Employee | Years of Service | Business Unit | Location |
| Michael Nolan | 35 | IT | Canton, MA |
| Sharon Conner | 25 | Operations | Salem, VA |
| Anissa Roberts | 25 | International Marine Underwriters | Boston, MA |
| Richard Dehart | 15 | IT | Salem, VA |
| Jean Fitzpatrick | 15 | International Marine Underwriters | Canton, MA |
| Elaine Meagher | 15 | IT | Canton, MA |
| Eileen Kelley | 10 | Finance | Canton, MA |
| Michael Adams | 10 | Actuarial | Farmington, CT |
| Christopher Moede | 5 | OneBeacon Technology Insurance | Minnetonka, MN |
| Boris Shekhtman | 5 | Claims | Farmington, CT |
| Yvette Maneval | 5 | OneBeacon Government Risks | Pennsylvania |
| Patrice Enriquez | 5 | OneBeacon Accident Group | Morristown, NJ |
| Marie Pfaff | 5 | OneBeacon Accident Group | Morristown, NJ |
| Kathryn Spencer | 5 | IT | Salem, VA |
| Mark Yorsaner | 5 | Risk Management | Canton, MA |
| Steven Spina | 5 | OneBeacon Professional Insurance | Farmington, CT |
| Paul Romano | 5 | OneBeacon Professional Insurance | Farmington, CT |