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Gruma Corporation d/b/a Mission Foods

15 cases in this site's copy of the record · 1 of those 15 are marked open by the Board · Region 04, 28, 32 · Hayward, CA; Mountain Top, PA; Phoenix, AZ; Plymouth Meeting, PA; Tempe, AZ

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	11
CC	Secondary boycott charge	1
RC	Petition for an election	2
RD	Petition to decertify	1

The cases

Charge against an employer
CA
Filed 6 December 2022Case 28-CA-308404OpenTempe, AZRegion 28Workers in the unit 55
Secondary boycott charge
CC
Filed 14 April 2020Case 04-CC-259124ClosedPlymouth Meeting, PARegion 04Workers in the unit 450
Charge against an employer
CA
Filed 19 March 2019Case 04-CA-237924ClosedMountain Top, PARegion 04Workers in the unit 400
Charge against an employer
CA
Filed 5 June 2018Case 04-CA-221436ClosedMountain Top, PARegion 04Workers in the unit 400
Charge against an employer
CA
Filed 18 May 2018Case 04-CA-220478ClosedMountain Top, PARegion 04Workers in the unit 400
Charge against an employer
CA
Filed 9 November 2017Case 04-CA-209548ClosedMountain Top, PARegion 04Workers in the unit 400
Charge against an employer
CA
Filed 10 July 2017Case 04-CA-202091ClosedMountain Top, PARegion 04Workers in the unit 400
Charge against an employer
CA
Filed 7 July 2017Case 04-CA-201973ClosedMountain Top, PARegion 04Workers in the unit 400
Charge against an employer
CA
Filed 25 May 2017Case 04-CA-199438ClosedMountain Top, PARegion 04Workers in the unit 400
Petition to decertify
RD
Filed 18 May 2017Case 28-RD-199028ClosedTempe, AZRegion 28Workers in the unit 147
Included: All employees full time and regular part time TQ techs, sanitation techs, receivers, mechanics, production operators, production packers, production sweepers, production ingredients, production maseca dumpers employed byu the Company located at 5860 S Ash Ave, Tempe, AZ 85283, and all full time and regular part time warehouse employed by the Company located at 860 W Carver Rd, Tempe, AZ 85284. Excluded: ...
Charge against an employer
CA
Filed 20 April 2017Case 28-CA-197261ClosedPhoenix, AZRegion 28Workers in the unit 150
GRUMA CORPORATION d/b/a MISSION FOODS
RC
Filed 26 September 2011Case 04-RC-065349ClosedMountain Top, PARegion 04Workers in the unit 250
Included All full-time and regular part- time production and warehouse employees, sanitation and maintenance employees, quality control employees and lead employees by the employer at its 15 Elmwood Rd. Mountain Top PA facility. Excluded All other employees, including office clerical employees, professional employees, sales employees, over the road truck drivers, guards, supervisors as defined in the Act.
Charge against an employer
CA
Filed 14 January 2010Case 32-CA-024902ClosedHayward, CARegion 32Workers in the unit 200
Charge against an employer
CA
Filed 26 October 2009Case 32-CA-024791ClosedHayward, CARegion 32Workers in the unit 200
Petition for an election
RC
Filed 4 September 2009Case 32-RC-005689ClosedHayward, CARegion 32Workers in the unit 240
Included: All full-time and regular part-time bakers (including flour tortilla machine operators, corn tortilla machine operators, chip machine operators, and tostada machine operators), warehoue employees, and janitorial employees employed by the Employer at its Hayward, California facility. Excluded: All other employees, guards and supervisors as defined by the Act.

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

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