John Macumber

Ontario Power Generation/Mechanical Technician First Line Manager Assistant

2025 Salary

$221,858

Total compensation $230,682, including $8,824 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

#989

Ontario Power Generation

Years on List

2006–2025

Peak Salary

$256,168

2023

Full 2025 roster at Ontario Power Generation →·See where $221,858 ranks →

Total Compensation History

Total compensation, 2006–2025. Axis starts at $100,000, the Sunshine List disclosure threshold.

Full History
2006–2025

$115,117 in 2006 is worth about $173,255 in 2025 dollars.

Full salary history, by year
Year	Employer	Position	Salary	Benefits	Total
2025	Ontario Power Generation	Mechanical Technician First Line Manager AssistantOntario Power Generation	$221,858	$8,824	$230,682
2024	Ontario Power Generation	Mechanical Technician First Line Manager AssistantOntario Power Generation	$236,651	$7,468	$244,119
2023	Ontario Power Generation	Mechanical Technician First Line Manager AssistantOntario Power Generation	$256,168	$7,293	$263,461
2022	Ontario Power Generation	Mechanical Technician First Line Manager AssistantOntario Power Generation	$213,759	$6,558	$220,317
2021	Ontario Power Generation	Mechanical Technician First Line Manager AssistantOntario Power Generation	$225,625	$5,914	$231,539
2020	Ontario Power Generation	Mechanical Technician First Line Manager AssistantOntario Power Generation	$223,210	$5,326	$228,536
2019	Ontario Power Generation	Mechanical Technician First Line Manager AssistantOntario Power Generation	$227,179	$4,491	$231,670
2018	Ontario Power Generation	Mechanical Technician First Line Manager AssistantOntario Power Generation	$195,095	$4,497	$199,591
2017	Ontario Power Generation	Mechanical Technician First Line Manager AssistantOntario Power Generation	$205,159	$4,969	$210,128
2016	Ontario Power Generation	Mechanical TechnicianOntario Power Generation	$207,184	$1,381	$208,565
2015	Ontario Power Generation	Mechanical TechnicianOntario Power Generation	$175,206	$1,372	$176,578
2014	Ontario Power Generation	Mechanical TechnicianOntario Power Generation	$164,843	$1,366	$166,208
2013	Ontario Power Generation	Mechanical TechnicianOntario Power Generation	$146,467	$1,350	$147,817
2012	Ontario Power Generation	Mechanical TechnicianOntario Power Generation	$146,106	$1,333	$147,439
2011	Ontario Power Generation	Mechanical TechnicianOntario Power Generation	$138,944	$6,169	$145,113
2010	Ontario Power Generation	Mechanical TechnicianOntario Power Generation	$141,929	$1,256	$143,184
2007	Ontario Power Generation	Mechanical Maintainer JourneypersonOntario Power Generation	$188,364	$1,168	$189,531
2006	Ontario Power Generation	Mechanical Maintainer JourneypersonOntario Power Generation	$115,117	$1,472	$116,589

Take-Home Pay
(After Tax) · 2025 estimate

In 2025, John Macumber's $221,858 salary works out to roughly $141,849 after income tax, CPP and EI — an all-in deduction rate of about 36.1%. Compared with 2024, when the figure was $236,651, that is a drop of about 6%. John Macumber has appeared on the list 18 times since 2006. 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: ~$141,849
Effective income-tax rate (excl. CPP/EI): ~33.6%
CPP + EI contributions: ~$5,507
All-in deduction rate (incl. CPP/EI): ~36.1%
vs. 2025 Mechanical Technician First Line Manager Assistant median: +8%

Where does $221,858 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