Derek Haddleton

Ontario Power Generation/Civil Maintainer First Line Manager Assistant

2025 Salary

$151,137

Total compensation $158,054, including $6,917 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

#5,993

Ontario Power Generation

Years on List

2009–2025

Peak Salary

$176,690

2023

Full 2025 roster at Ontario Power Generation →·See where $151,137 ranks →

Total Compensation History

Total compensation, 2009–2025. Axis starts at $100,000, the Sunshine List disclosure threshold.

Full History
2009–2025

$113,810 in 2009 is worth about $163,354 in 2025 dollars.

Full salary history, by year
Year	Employer	Position	Salary	Benefits	Total
2025	Ontario Power Generation	Civil Maintainer First Line Manager AssistantOntario Power Generation	$151,137Benefits $6,917Total $158,054	$6,917	$158,054
2024	Ontario Power Generation	Civil Maintainer First Line Manager AssistantOntario Power Generation	$174,524Benefits $5,861Total $180,385	$5,861	$180,385
2023	Ontario Power Generation	Civil Maintainer First Line Manager AssistantOntario Power Generation	$176,690Benefits $3,547Total $180,237	$3,547	$180,237
2022	Ontario Power Generation	Civil Maintainer First Line Manager AssistantOntario Power Generation	$150,140Benefits $3,247Total $153,387	$3,247	$153,387
2021	Ontario Power Generation	Civil Maintainer First Line Manager AssistantOntario Power Generation	$159,636Benefits $2,995Total $162,632	$2,995	$162,632
2020	Ontario Power Generation	Civil Maintainer First Line Manager AssistantOntario Power Generation	$140,090Benefits $2,713Total $142,803	$2,713	$142,803
2019	Ontario Power Generation	Civil MaintainerOntario Power Generation	$146,362Benefits $2,435Total $148,797	$2,435	$148,797
2018	Ontario Power Generation	Civil MaintainerOntario Power Generation	$138,486Benefits $2,432Total $140,918	$2,432	$140,918
2017	Ontario Power Generation	Civil MaintainerOntario Power Generation	$125,652Benefits $3,992Total $129,644	$3,992	$129,644
2016	Ontario Power Generation	Civil MaintainerOntario Power Generation	$114,099Benefits $1,241Total $115,340	$1,241	$115,340
2015	Ontario Power Generation	Civil MaintainerOntario Power Generation	$109,233Benefits $1,235Total $110,468	$1,235	$110,468
2014	Ontario Power Generation	Civil MaintainerOntario Power Generation	$114,037Benefits $1,230Total $115,267	$1,230	$115,267
2013	Ontario Power Generation	Civil MaintainerOntario Power Generation	$124,592Benefits $1,217Total $125,809	$1,217	$125,809
2012	Ontario Power Generation	Civil MaintainerOntario Power Generation	$114,798Benefits $1,204Total $116,002	$1,204	$116,002
2011	Ontario Power Generation	Civil MaintainerOntario Power Generation	$125,099Benefits $1,193Total $126,292	$1,193	$126,292
2010	Ontario Power Generation	Civil MaintainerOntario Power Generation	$130,031Benefits $1,143Total $131,175	$1,143	$131,175
2009	Ontario Power Generation	Civil MaintainerOntario Power Generation	$113,810Benefits $1,132Total $114,942	$1,132	$114,942

Take-Home Pay
(After Tax) · 2025 estimate

Derek Haddleton was paid $151,137 in 2025; after income tax, CPP and EI that is roughly $104,511, an effective income-tax rate of about 27.2%. That is about 13% less than the $174,524 paid in 2024. Records under this name have appeared on the Sunshine List 17 years in all, first in 2009. 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: ~$104,511
Effective income-tax rate (excl. CPP/EI): ~27.2%
CPP + EI contributions: ~$5,507
All-in deduction rate (incl. CPP/EI): ~30.9%
vs. 2025 Civil Maintainer First Line Manager Assistant median: about even

Where does $151,137 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.

Also at Ontario Power Generation
2025

Also at Ontario Power Generation, 2025
#	Name	Position	Salary	Total
1	Kenneth Hartwick	Special Advisor	$1,907,409	$1,910,992
2	Nicolle Butcher	President and Chief Executive Officer	$1,596,218	$1,598,309
3	Steve Gregoris	Chief Nuclear Officer	$1,092,855	$1,096,651
4	Aida Cipolla	Chief Financial Officer and Chief Administrative Officer	$1,013,496	$1,016,119
5	Subo Sinnathamby	Chief Projects Officer	$981,476	$985,253
6	Mark Knutson	Chief Enterprise Engineering and Chief Nuclear Engineer	$856,947	$859,793
7	Jon Franke	Senior Vice President Nuclear	$826,655	$828,637
8	Shelley Babin	Chief Operations Officer	$748,469	$750,849
9	Brenda Macdonald	Chief Commercial Officer	$727,479	$729,740
10	David Kaposi	Executive Vice President Investment Strategy and Business Development	$701,432	$703,541