Marnie Derkx
Ontario Power Generation/Civil Maintainer First Line Manager Assistant
2025 Salary
$161,526Total compensation $166,579, including $5,053 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
#5,042Ontario Power Generation
Years on List
52021–2025
Peak Salary
$178,6692024
Full 2025 roster at Ontario Power Generation →·See where $161,526 ranks →
Total Compensation History
Full History
2021–2025
$121,836 in 2021 is worth about $141,282 in 2025 dollars.
| Year | Position | Salary |
|---|---|---|
| 2025 | Civil Maintainer First Line Manager AssistantOntario Power Generation | $161,526Benefits $5,053Total $166,579 |
| 2024 | Civil Maintainer First Line Manager AssistantOntario Power Generation | $178,669Benefits $4,352Total $183,021 |
| 2023 | Civil Maintainer First Line Manager AssistantOntario Power Generation | $160,159Benefits $4,247Total $164,406 |
| 2022 | Civil Maintainer First Line Manager AssistantOntario Power Generation | $116,381Benefits $3,824Total $120,205 |
| 2021 | Civil Maintainer First Line Manager AssistantOntario Power Generation | $121,836Benefits $3,467Total $125,303 |
Take-Home Pay
(After Tax) · 2025 estimate
In 2025, Marnie Derkx's $161,526 salary works out to roughly $110,228 after income tax, CPP and EI — an all-in deduction rate of about 31.8%. That is about 7% above the 2025 median of $150,723 for Civil Maintainer First Line Manager Assistant on the Sunshine List. That is about 10% less than the $178,669 paid in 2024. Members of OMERS, OTPP, HOOPP or OPTrust typically take home another 7–10% less after pension contributions, which this estimate leaves out.
- Estimated net pay
- ~$110,228
- Effective income-tax rate (excl. CPP/EI)
- ~28.3%
- CPP + EI contributions
- ~$5,507
- All-in deduction rate (incl. CPP/EI)
- ~31.8%
- vs. 2025 Civil Maintainer First Line Manager Assistant median
- +7%
Where does $161,526 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.