Sarah O'Callaghan
$273,500.88asAssistant Deputy Minister, Total Rewards and Classification Division+42.52%
Employed by Treasury Board Secretariat in 2025, according to Government of Ontario public salary records.
Salary Information
Historical salary and taxable benefits from 2018 to 2025.
Sarah O'Callaghan earned $273,500.88 as Assistant Deputy Minister, Total Rewards and Classification Division at Treasury Board Secretariat in 2025, according to the Ontario Sunshine List. This represents a 42.52% increase over the previous year's reported salary. Sarah O'Callaghan has appeared on the Ontario Sunshine List 7 times between 2018 and 2025, with reported earnings peaking at $273,500.88 in 2025. In addition to salary, $259.97 in taxable benefits was disclosed for 2025. Treasury Board Secretariat reports under the Government of Ontario – Ministries sector of Ontario's public sector salary disclosure.
Top earning Assistant Deputy Minister, Total Rewards and Classification Divisions in Treasury Board Secretariat
| Name | Salary |
|---|---|
| Sarah O'Callaghan | $273,500.88 |
Other employees at Treasury Board Secretariat
| Name | Position | Salary |
|---|---|---|
| Maureen Buckley Provincial Controller and Assistant Deputy Minister | Provincial Controller and Assistant Deputy Minister | $289,144.10 |
| Sandra Yee Assistant Deputy Minister, Corporate Services Division and Chief Administrative Officer | Assistant Deputy Minister, Corporate Services Division and Chief Administrative Officer | $285,799.53 |
| Muyi-Deen Ajasa Assistant Deputy Minister, Human Resources Service Delivery Division | Assistant Deputy Minister, Human Resources Service Delivery Division | $285,365.87 |
| Angela Mckenna Director, Strategic Human Resources Branch | Director, Strategic Human Resources Branch | $280,346.74 |
| Sanjeev Batra Chief Internal Auditor and Assistant Deputy Minister | Chief Internal Auditor and Assistant Deputy Minister | $274,619.95 |
| Sarah Truscott Director, Labour Strategies and Solutions Branch | Director, Labour Strategies and Solutions Branch | $269,753.98 |
| Martin Schlaepfer Assistant Deputy Minister, Corporate Services Division and Chief Administrative Officer | Assistant Deputy Minister, Corporate Services Division and Chief Administrative Officer | $268,000.05 |
| Nancy Lavoie Chief Risk Officer and Assistant Deputy Minister | Chief Risk Officer and Assistant Deputy Minister | $264,714.21 |
| Nisha Haji Assistant Deputy Minister, Centre for Learning and Modernization | Assistant Deputy Minister, Centre for Learning and Modernization | $264,424.38 |
| Jay Porter Assistant Deputy Minister, Broader Public Sector Partnerships and Oversight Division | Assistant Deputy Minister, Broader Public Sector Partnerships and Oversight Division | $261,817.26 |