Michael Koolhaas
Ontario Power Generation/First Line Manager, Custodial Services
2025 Salary
$158,898Total compensation $159,884, including $986 in taxable benefits.
Source: Ontario’s Public Sector Salary Disclosure — names paid $100,000 or more that year. How we build this · Report an error on this page
At a Glance
2025
Employer Rank
#5,769Ontario Power Generation
Years on List
92017–2025
Peak Salary
$158,8982025
Full 2025 roster at Ontario Power Generation →·See where $158,898 ranks →
Total Compensation History
Full History
2017–2025
$100,967 in 2017 is worth about $127,138 in 2025 dollars.
| Year | Position | Salary |
|---|---|---|
| 2025 | First Line Manager, Custodial ServicesOntario Power Generation | $158,898 |
| 2024 | First Line Manager, Custodial ServicesOntario Power Generation | $138,471 |
| 2023 | First Line Manager, Custodial ServicesOntario Power Generation | $132,973 |
| 2022 | First Line Manager, Custodial ServicesOntario Power Generation | $134,186 |
| 2021 | First Line Manager, Custodial ServicesOntario Power Generation | $131,078 |
| 2020 | Human Resources Business PartnerOntario Power Generation | $115,113 |
| 2019 | Human Resources Business PartnerOntario Power Generation | $110,895 |
| 2018 | Human Resources Business PartnerOntario Power Generation | $105,160 |
| 2017 | Human Resources Business PartnerOntario Power Generation | $100,967 |
Take-Home Pay
(After Tax) · 2025 estimate
Michael Koolhaas was paid $158,898 in 2025; after income tax, CPP and EI that is roughly $108,782, an effective income-tax rate of about 28.1%. Compared with 2024, when the figure was $138,471, that is a rise of about 15%. Within Ontario Power Generation, Michael Koolhaas's total compensation of $159,884 was the #5,769 of 10,346, against a median salary of $161,066. This estimate leaves out pension contributions; members of OMERS, OTPP, HOOPP or OPTrust typically take home another 7–10% less.
- Estimated net pay
- ~$108,782
- Effective income-tax rate (excl. CPP/EI)
- ~28.1%
- CPP + EI contributions
- ~$5,507
- All-in deduction rate (incl. CPP/EI)
- ~31.5%
Where does $158,898 rank on the Sunshine List? →
Estimate only: 2025 federal and Ontario rates, basic personal amounts, Canada employment amount and CPP/EI credits; single, employment income only, salary treated as full-year income. Ignores pension contributions (OMERS, HOOPP, OTPP, OPTrust and similar plans lower actual take-home), union dues, RRSPs and benefits.