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Costco Wholesale

73 cases in this site's copy of the record · 9 of those 73 are marked open by the Board · Region 01, 03, 05, 07, 08, 09, 16, 18, 19, 20, 21, 22, 25, 27, 31, 32 · Alhambra, CA; Avon, OH; Baltimore, MD; Brandywine, MD; Brighton, NY; Burbank, CA and more

Each case links to the Board's own docket page. This site holds what the Board listed, not the documents.

What kinds of case

Type	What it is	Here
CA	Charge against an employer	70
RC	Petition for an election	1
RD	Petition to decertify	2

The cases

Charge against an employer
CA
Filed 11 September 2026Case 22-CA-395227OpenNorth Brunswick, NJRegion 22Workers in the unit 12
Charge against an employer
CA
Filed 17 August 2026Case 25-CA-393028OpenLoves Park, ILRegion 25Workers in the unit 150
COSTCO WHOLESALE
CA
Filed 10 August 2026Case 09-CA-392838OpenFlorence, KYRegion 09Workers in the unit 200,000
Charge against an employer
CA
Filed 10 July 2026Case 05-CA-390610OpenGlen Allen, VARegion 05Workers in the unit 25
COSTCO WHOLESALE
CA
Filed 8 May 2026Case 09-CA-387248OpenFlorence, KYRegion 09Workers in the unit 200,000
Charge against an employer
CA
Filed 5 December 2025Case 19-CA-376446OpenSumner, WARegion 19Workers in the unit 150
Charge against an employer
CA
Filed 28 August 2025Case 19-CA-372408ClosedIssaquah, WARegion 19Workers in the unit 10,000
Charge against an employer
CA
Filed 25 August 2025Case 18-CA-372366ClosedNew Berlin, WIRegion 18Workers in the unit 200
Charge against an employer
CA
Filed 21 February 2025Case 20-CA-360823ClosedSacramento, CARegion 20Workers in the unit 356
Charge against an employer
CA
Filed 18 February 2025Case 20-CA-360465ClosedSacramento, CARegion 20Workers in the unit 350
Charge against an employer
CA
Filed 27 January 2025Case 19-CA-359114OpenIssaquah, WARegion 19Workers in the unit 1
Charge against an employer
CA
Filed 23 January 2025Case 21-CA-358989ClosedNorwalk, CARegion 21Workers in the unit 1,800
Charge against an employer
CA
Filed 14 January 2025Case 19-CA-358263ClosedSumner, WARegion 19Workers in the unit 150
Charge against an employer
CA
Filed 17 December 2024Case 03-CA-356842ClosedBrighton, NYRegion 03Workers in the unit 300
Charge against an employer
CA
Filed 12 December 2024Case 20-CA-356763ClosedSacramento, CARegion 20Workers in the unit 300
Charge against an employer
CA
Filed 6 December 2024Case 21-CA-356360ClosedIrvine, CARegion 21Workers in the unit 300
Charge against an employer
CA
Filed 6 December 2024Case 20-CA-356370ClosedRancho Cordova, CARegion 20Workers in the unit 240
Charge against an employer
CA
Filed 6 December 2024Case 20-CA-356354ClosedSacramento, CARegion 20Workers in the unit 284
Charge against an employer
CA
Filed 6 December 2024Case 20-CA-356303ClosedSacramento, CARegion 20Workers in the unit 356
Charge against an employer
CA
Filed 6 December 2024Case 19-CA-356191ClosedIssaquah, WARegion 19Workers in the unit 300
Charge against an employer
CA
Filed 6 December 2024Case 19-CA-356182ClosedSumner, WARegion 19Workers in the unit 170
Charge against an employer
CA
Filed 6 December 2024Case 19-CA-356177OpenSumner, WARegion 19Workers in the unit 170
Charge against an employer
CA
Filed 6 December 2024Case 19-CA-356171ClosedSumner, WARegion 19Workers in the unit 170
Charge against an employer
CA
Filed 6 December 2024Case 19-CA-356168OpenSumner, WARegion 19Workers in the unit 170
Charge against an employer
CA
Filed 25 November 2024Case 03-CA-355485ClosedBrighton, NYRegion 03Workers in the unit 300
Charge against an employer
CA
Filed 20 November 2024Case 03-CA-355134ClosedBrighton, NYRegion 03Workers in the unit 300
Charge against an employer
CA
Filed 8 November 2024Case 21-CA-354570ClosedMonterey Park, CARegion 21Workers in the unit 2,500
Charge against an employer
CA
Filed 18 October 2024Case 07-CA-353241ClosedTraverse City, MIRegion 07Workers in the unit 230
Charge against an employer
CA
Filed 26 September 2024Case 20-CA-351488ClosedSacramento, CARegion 20Workers in the unit 284
Charge against an employer
CA
Filed 26 September 2024Case 20-CA-351471ClosedRancho Cordova, CARegion 20Workers in the unit 240
Charge against an employer
CA
Filed 26 September 2024Case 20-CA-351460ClosedSacramento, CARegion 20Workers in the unit 356
Charge against an employer
CA
Filed 18 September 2024Case 21-CA-350871ClosedMonterey Park, CARegion 21Workers in the unit 2,500
Charge against an employer
CA
Filed 18 September 2024Case 05-CA-351312ClosedGlen Burnie, MDRegion 05Workers in the unit 1,050
Charge against an employer
CA
Filed 12 September 2024Case 21-CA-350557ClosedAlhambra, CARegion 21Workers in the unit 2,000
Charge against an employer
CA
Filed 11 September 2024Case 21-CA-350518ClosedSan Diego, CARegion 21Workers in the unit 1
Charge against an employer
CA
Filed 6 September 2024Case 21-CA-350006ClosedNorwalk, CARegion 21Workers in the unit 1,800
Charge against an employer
CA
Filed 20 August 2024Case 05-CA-348805ClosedBrandywine, MDRegion 05Workers in the unit 220
Petition for an election
RC
Filed 22 April 2024Case 18-RC-340493ClosedSun Prairie, WIRegion 18Workers in the unit 14
Included: Tire shop employees Excluded: Managers, all non-tire shop employees
Charge against an employer
CA
Filed 8 January 2024Case 27-CA-333095ClosedWest Bountiful, UTRegion 27Workers in the unit 600
Charge against an employer
CA
Filed 18 September 2023Case 08-CA-326008ClosedNorth Canton, OHRegion 08Workers in the unit 80
Charge against an employer
CA
Filed 21 November 2022Case 20-CA-307744ClosedSacramento, CARegion 20Workers in the unit 300
Petition to decertify
RD
Filed 3 January 2022Case 19-RD-288397ClosedKent, WARegion 19Workers in the unit 33
Included: General Warehouse (Forklift operators and hostlers specifically). Excluded: All manager, all other general warehouse, clerical, maintenance and supervisors.
Petition to decertify
RD
Filed 23 November 2021Case 19-RD-286766ClosedDuPont, WARegion 19Workers in the unit 100
All full-time and regular part-time Material Handlers (forklift operators) employed by the Employer at its Seattle, WA facility excluding all other employees and guards and supervisors as defined in the Act
Charge against an employer
CA
Filed 27 July 2021Case 19-CA-280603ClosedIssaquah, WARegion 19Workers in the unit 500
Charge against an employer
CA
Filed 19 July 2021Case 31-CA-280174ClosedTorrance, CARegion 31Workers in the unit 300
Charge against an employer
CA
Filed 24 October 2019Case 21-CA-250530ClosedSAN DIEGO, CARegion 21Workers in the unit 350
Charge against an employer
CA
Filed 16 August 2019Case 21-CA-246716ClosedSan Diego, CARegion 21Workers in the unit 350
Charge against an employer
CA
Filed 7 January 2019Case 21-CA-233668ClosedCity Of Industry, CARegion 21Workers in the unit 300
Costco (Wholesale)
CA
Filed 10 May 2018Case 20-CA-220063ClosedSacramento, CARegion 20Workers in the unit 350
Charge against an employer
CA
Filed 26 February 2018Case 31-CA-215727ClosedBurbank, CARegion 31Workers in the unit 200
COSTCO WHOLESALE
CA
Filed 3 January 2017Case 21-CA-190798ClosedIrvine, CARegion 21Workers in the unit 500
COSTCO WHOLESALE
CA
Filed 15 December 2016Case 21-CA-189906ClosedCorona, CARegion 21Workers in the unit 1
Charge against an employer
CA
Filed 17 February 2016Case 31-CA-169824ClosedInglewood, CARegion 31Workers in the unit 230
Charge against an employer
CA
Filed 2 February 2016Case 20-CA-168959ClosedSacramento, CARegion 20Workers in the unit 275
Charge against an employer
CA
Filed 9 November 2015Case 19-CA-164020ClosedIssaquah, WARegion 19Workers in the unit 1
Charge against an employer
CA
Filed 8 August 2014Case 16-CA-134385ClosedFort Worth, TXRegion 16Workers in the unit 501
COSTCO WHOLESALE
CA
Filed 29 April 2013Case 21-CA-103956ClosedIRVINE, CARegion 21Workers in the unit 275
Charge against an employer
CA
Filed 14 September 2012Case 05-CA-089329ClosedBaltimore, MDRegion 05Workers in the unit 160
Charge against an employer
CA
Filed 21 February 2012Case 32-CA-074851ClosedHayward, CARegion 32Workers in the unit 100
Charge against an employer
CA
Filed 1 November 2011Case 32-CA-068012ClosedHayward, CARegion 32Workers in the unit 100
Charge against an employer
CA
Filed 14 October 2011Case 32-CA-066771ClosedHayward, CARegion 32Workers in the unit 100
Charge against an employer
CA
Filed 6 September 2011Case 32-CA-063941ClosedHayward, CARegion 32Workers in the unit 500
Charge against an employer
CA
Filed 18 August 2011Case 32-CA-063005ClosedHayward, CARegion 32Workers in the unit 200
Charge against an employer
CA
Filed 14 April 2011Case 05-CA-036563ClosedBaltimore, MDRegion 05Workers in the unit 160
Charge against an employer
CA
Filed 1 February 2010Case 21-CA-039211ClosedAlhambra, CARegion 21Workers in the unit 100
Charge against an employer
CA
Filed 28 January 2010Case 34-CA-012585ClosedMilford, CTRegion 01Workers in the unit 500
Charge against an employer
CA
Filed 12 November 2009Case 05-CA-035393ClosedBaltimore, MDRegion 05Workers in the unit 160
Charge against an employer
CA
Filed 14 August 2009Case 20-CA-034620ClosedSacramento, CARegion 20Workers in the unit 268
Charge against an employer
CA
Filed 4 August 2009Case 21-CA-038937ClosedPalm Desert, CARegion 21Workers in the unit 250
Charge against an employer
CA
Filed 19 May 2008Case 20-CA-033942ClosedRancho Cordova, CARegion 20Workers in the unit 50
Charge against an employer
CA
Filed 4 September 2007Case 20-CA-033570ClosedRancho Cordova, CARegion 20Workers in the unit 50
Charge against an employer
CA
Filed 27 July 2007Case 20-CA-033515ClosedRancho Cordova, CARegion 20Workers in the unit 50
Charge against an employer
CA
Filed 23 April 2004Case 08-CA-035010ClosedAvon, OHRegion 08Workers in the unit 500

Last refreshed 19 September 2026. What is in it, and what is not.

The Labor Board FYI is independent, and is not the Board or any government agency. Where a number here disagrees with the Board's, the Board is right: tell us at [email protected]. If a name here is a private person and not a business or a union, write to the same address and it comes off. Where this comes from.