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Nonprofit · EIN 51-0214815

UNITED STEELWORKERS

Also known as 08599 LOCAL

Tax-exempt · FONTANA, CA 92335

Financials

$461K$412K2023$439K$478K2024$525K$447K2025
Revenue Expenses · by fiscal year end
Financials of UNITED STEELWORKERS by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2025990$525,250$446,971$78,279$420,194$0$420,194
December 31, 2024990$438,657$477,904-$39,247$341,918$0$341,918
December 31, 2023990$460,719$411,583$49,136$331,165$0$331,165
Financial details: 990 for the year ended December 31, 2025

Revenue

Contributions, gifts and grants
$0
Program service revenue
$500,566
Investment income
$9,356
Net rental income
$8,000
Other revenue
$15,328

Expenses

Grants and similar amounts paid
$18,119
Compensation of officers, directors and key employees
$52,896
Other salaries and wages
$94,527
Salaries, compensation and benefits (total)
$153,665
Professional fundraising fees
$0
Occupancy
$89,407
Travel
$42,241

Balance sheet and other

Total assets, start of year
$341,918
Total assets, end of year
$420,194
Total liabilities, end of year
$0
Net assets, end of year
$420,194
Land, buildings and equipment
$48,477
Gross receipts
$525,250
Employees
20
Year formed
1978
State of legal domicile
CA

From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.

Officers, directors and key employees

As listed on the 990 for the year ended December 31, 2025, highest compensation first.

NameTitleHours / weekCompensation
Dawn DooleyPresident
Officer
40$13,043
Richard M RomoVice President
Officer
5$7,495
Rosemarie TibblesTreasurer
Officer
5$6,915
Martha MendozaFinancial Secretary
Officer
5$6,915
Virginia RodriguezRecording Secretary
Officer
5$4,732
Trisha M GarciaTrustee
Officer
5$3,182
Carlos GaricaTrustee
Officer
5$3,182
Michalle StephenGuide
Officer
5$3,182
Lydia S WibertTrustee
Officer
5$1,932
Robert De JorgeGuard
Officer
5$1,159
Jacob ChavezGuard
Officer
5$1,159
990 for the year ended December 31, 2024: 11 people
NameTitleHours / weekCompensation
Dawn DooleyPresident
Officer
40$12,113
Richard M RomoVice President
Officer
5$6,840
Rosemarie TibbelsTreasurer
Officer
5$6,311
Martha MendozaFinancial Secretary
Officer
5$6,311
Virginia RodriguezRecording Secretary
Officer
5$4,319
Michalle StephenGuide
Officer
5$2,244
Trisha M GarciaTrustee
Officer
5$1,972
Carlos GarciaTrustee
Officer
5$1,972
Lydia S WibertTrustee
Officer
5$1,763
Robert De JongeGuard
Officer
5$1,058
Jacob ChavezGuard
Officer
5$1,058
990 for the year ended December 31, 2023: 11 people
NameTitleHours / weekCompensation
Dawn DooleyPresident
Officer
40$11,474
Richard M RomoVice President
Officer
5$6,390
Rosemarie TibbelsTreasurer
Officer
5$5,895
Martha MendozaFinancial Secretary
Officer
5$5,895
Virginia RodriguezRecordig Secretary
Officer
5$2,353
Patty P NewtonRecording Secretary
Officer, Former
5$1,681
Lydia S WibertGuide
Officer
5$1,647
Trisha M GarciaTrustee
Officer
5$1,120
Carlos GarciaTrustee
Officer
5$1,120
Robert De JongeGuard
Officer
5$988
Jacob ChavezGuard
Officer
5$988

Address and contacts

Address (IRS master file)
16981 FOOTHILL BLVD STE A-1, FONTANA, CA 92335-3566
In care of
% MARTHA C MENDOZA
Principal officer (990 for 2025)
Martha C Mendoza, 16981 Foothill Blvc STE A-1, Fontana, CA 92335
Signed the 990
Martha C Mendoza, Financial Secretary
Phone
(909) 823-6755

California records

California keeps its own records of charities and corporations. Search them by EIN 51-0214815 or by the name UNITED STEELWORKERS.

Attorney General, Registry of Charities and Fundraisers
Registration status and filed reports (CT-TR-1, RRF-1)

Mission

THE MISSION STATEMENT OF THE ORGANIZATION INCLUDE, BUT IS NOT LIMITED TO ON BEHALF OF ITS MEMBERS COLLECTIVE BARGAINING, GRIEVANCE PROCEDURES, ARBITRATION, STRIKE BENEFITS, EDUCATION, AND TO IMPROVE THE WORKING CONDITIONS OF ITS MEMBERS.

990 for the year ended December 31, 2025

Program accomplishments

  • THE LOCAL UNION CONTINUES IN AN ONGOING EFFORT TO DEFEND AND ENFORCE THE NEGOTIATED COLLECTIVE BARGAINING AGREEMENT FOR OUR MEMBERS WAGES, BENEFITS, AND WORKING CONDITIONS. THE MEMBERS DUES AND RELATED INCOME AND EXPENSES ARE USED TO CARRY OUT THESE ACTIVITIES. THE LOCAL UNION IS CONTINUALLY STRIVING TO MAINTANIN OR ACCOMPLISH IMPROVEMENTS FOR OUR MEMBERS.

What it must file and when

IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025December 31, 2025May 15, 2026990 on file
2024December 31, 2024May 15, 2025990 on file
2023December 31, 2023May 15, 2024990 on file

IRS record

EIN
51-0214815
Tax-exempt status
501(c)(5): Labor, agricultural or horticultural organization
Donations deductible
No
Exempt since
1940
Accounting year ends
December
Files
Form 990 or 990-EZ
Assets (IRS master file)
$420,194
Income (IRS master file)
$525,250

Filing history

FormYear endedRevenueExpensesAssetsReturn
990December 2025$525,250$446,971$420,194IRS
990December 2024$438,657$477,904$341,918IRS
990December 2023$460,719$411,583$331,165XML
990December 2022$415,843$445,101$282,029IRS
990December 2021–––IRS
990December 2020–––IRS

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 51-0214815).

Questions about UNITED STEELWORKERS

What is the EIN of UNITED STEELWORKERS?
The employer identification number (EIN) of UNITED STEELWORKERS is 51-0214815.
Is UNITED STEELWORKERS tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(5) since 1940.
Are donations to UNITED STEELWORKERS tax-deductible?
No. The IRS master file says contributions to it are not deductible.
Which annual return does UNITED STEELWORKERS file?
Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
When is the next return of UNITED STEELWORKERS due?
The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did UNITED STEELWORKERS last file with the IRS?
The latest return in the IRS public files is the 990 for the year ended December 2025.
Who is the principal officer of UNITED STEELWORKERS?
The 990 for the year ended December 31, 2025 names Martha C Mendoza.
Who are the officers and directors of UNITED STEELWORKERS?
The 990 for the year ended December 31, 2025 lists 11 people; 11 received compensation from the organization, the highest $13,043 (Dawn Dooley, President).
How much revenue does UNITED STEELWORKERS have?
On its 990 for the year ended December 31, 2025 it reported revenue of $525,250, expenses of $446,971 and total assets of $420,194 at year end.

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