| Previous English Name | Previous Chinese Name | Change Date |
|---|---|---|
| MERCER HUMAN RESOURCE CONSULTING LIMITED | 美世人力資源顧問有限公司 | 2007-08-29 |
| MERCER HUMAN RESOURCE CONSULTING LIMITED | - | 2002-05-06 |
| WILLIAM M. MERCER LIMITED | 偉世顧問有限公司 | 2002-04-03 |
| WILLIAM M. MERCER LIMITED | 偉世保險顧問有限公司 | 1987-02-06 |
| WILLIAM M. MERCER LIMITED | - | 1978-02-24 |
| MERCER HUMAN RESOURCE CONSULTING LIMITED | 美世人力資源顧問有限公司 | 2007-09-12 |
| MERCER (HONG KONG) LIMITED | - | 2026-08-21 |