George Cocossis

Ontario Power Generation/Supervising Nuclear Operator First Line Manager Assistant

2025 Salary

$105,502

Total compensation $107,014, including $1,512 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

#10,042

Ontario Power Generation

Years on List

2010–2025

Peak Salary

$157,187

2011

Full 2025 roster at Ontario Power Generation →·See where $105,502 ranks →

Total Compensation History

Total compensation, 2010–2025. Axis starts at $100,000, the Sunshine List disclosure threshold.

Full History
2010–2025

$120,320 in 2010 is worth about $169,584 in 2025 dollars.

Full salary history, by year
Year	Employer	Position	Salary	Benefits	Total
2025	Ontario Power Generation	Supervising Nuclear Operator First Line Manager AssistantOntario Power Generation	$105,502Benefits $1,512Total $107,014	$1,512	$107,014
2024	Ontario Power Generation	Supervising Nuclear Operator First Line Manager AssistantOntario Power Generation	$101,942Benefits $7,895Total $109,837	$7,895	$109,837
2023	Ontario Power Generation	Supervising Nuclear Operator First Line Manager AssistantOntario Power Generation	$149,503Benefits $7,705Total $157,208	$7,705	$157,208
2022	Ontario Power Generation	Supervising Nuclear Operator First Line Manager AssistantOntario Power Generation	$131,451Benefits $6,900Total $138,350	$6,900	$138,350
2021	Ontario Power Generation	Supervising Nuclear Operator First Line Manager AssistantOntario Power Generation	$133,707Benefits $6,191Total $139,898	$6,191	$139,898
2020	Ontario Power Generation	Supervising Nuclear Operator First Line Manager AssistantOntario Power Generation	$143,393Benefits $5,546Total $148,940	$5,546	$148,940
2019	Ontario Power Generation	Supervising Nuclear Operator First Line Manager AssistantOntario Power Generation	$125,558Benefits $4,794Total $130,352	$4,794	$130,352
2018	Ontario Power Generation	Supervising Nuclear Operator First Line Manager AssistantOntario Power Generation	$119,608Benefits $4,802Total $124,410	$4,802	$124,410
2017	Ontario Power Generation	Supervising Nuclear Operator First Line Manager AssistantOntario Power Generation	$118,410Benefits $5,334Total $123,744	$5,334	$123,744
2016	Ontario Power Generation	Supervising Nuclear Operator First Line Manager AssistantOntario Power Generation	$121,473Benefits $1,445Total $122,918	$1,445	$122,918
2015	Ontario Power Generation	Supervising Nuclear Operator First Line Manager AssistantOntario Power Generation	$121,164Benefits $1,435Total $122,599	$1,435	$122,599
2014	Ontario Power Generation	Supervising Nuclear Operator First Line Manager AssistantOntario Power Generation	$116,768Benefits $1,428Total $118,196	$1,428	$118,196
2013	Ontario Power Generation	Supervising Nuclear Operator First Line Manager AssistantOntario Power Generation	$114,265Benefits $1,408Total $115,673	$1,408	$115,673
2012	Ontario Power Generation	Supervising Nuclear Operator, First Line Manager AssistantOntario Power Generation	$133,390Benefits $1,300Total $134,690	$1,300	$134,690
2011	Ontario Power Generation	Nuclear OperatorOntario Power Generation	$157,187Benefits $1,279Total $158,467	$1,279	$158,467
2010	Ontario Power Generation	Nuclear OperatorOntario Power Generation	$120,320Benefits $1,192Total $121,511	$1,192	$121,511

Take-Home Pay
(After Tax) · 2025 estimate

In 2025, George Cocossis's $105,502 salary works out to roughly $77,794 after income tax, CPP and EI — an all-in deduction rate of about 26.3%. Among those listed as Supervising Nuclear Operator, FLM Assistant in 2025, the median was $190,560; this salary sits about 45% below it. That is about 3% more than the $101,942 paid in 2024. This estimate leaves out pension contributions; members of OMERS, OTPP, HOOPP or OPTrust typically take home another 7–10% less.

Estimated net pay: ~$77,794
Effective income-tax rate (excl. CPP/EI): ~21.0%
CPP + EI contributions: ~$5,507
All-in deduction rate (incl. CPP/EI): ~26.3%
vs. 2025 Supervising Nuclear Operator, FLM Assistant median: −45%

Where does $105,502 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