Skip to main content

The NLRB public website is scheduled to undergo routine maintenance from Friday, November 21, 2025, at 11:00 PM ET (8:00 PM PT) until Monday, November 24, 2025, at 6:00 AM ET. From Friday night at 11:00 pm ET through Saturday morning at about 9:00 am ET, E-Filing will not be available. From Saturday through Monday morning, the E-Filing applications (E-Filing, Online Charge and Petition, and My Account Portal) may be periodically unavailable. We apologize for any inconvenience.
The NLRB reopened from shutdown status on November 13, 2025. Due dates to file or serve most documents were tolled during the period of the shutdown, although due dates cannot be tolled for filing and service of unfair labor practice charges, applications for awards of fees and other expenses under the Equal Access to Justice Act, and certain representation petitions. For documents where tolling applies, the terms are that for each day on which the Agency’s offices were closed for all or any portion of the day, one day is added to the time for filing or service of the document. If the new due date falls on a weekend or holiday, the new due date will be moved to the next business day. For example, if the original due date was October 7, 2025 and the shutdown lasted 43 days, the revised due date is November 19, 2025. See chart for revised due dates.

Breadcrumb

  1. Home

Case Search Results

Case

Museum of Science and Curiosity

 
E-File Follow
Sign into MyNLRB to follow cases and receive updates. What is this?

Case Number: 20-CA-352013

Date Filed: 10/02/2024

Status: Closed

Location: Sacramento, CA

Region Assigned: Region 20, San Francisco, California



Docket Activity


Date sort ascending Document Issued/Filed By
05/27/2025 Letter Approving Withdrawal Request* NLRB - GC
03/27/2025 Signed Amended 8(e) Charge* Charging Party
10/03/2024 Signed Charge Against Employer* Charging Party

The Docket Activity list does not reflect all actions in this case.

* This document may require redactions before it can be viewed. To obtain a copy, please file a request through our FOIA Branch.

Related Documents


Related Documents data is not available.

Allegations


  • 8(a)(5) Refusal to Bargain/Bad Faith Bargaining (incl'g surface bargaining/direct dealing)

Participants


Participant Address Phone
Charging Party
Legal Representative
Rosenfeld, David
Weinberg, Roger & Rosenfeld
1375 55th Street
Emeryville, CA
94608
(510)337-1001
 
Charging Party
Notification
Thomas, Domonique
Communications Workers of America, AFL-CIO
12215 Telegrph Rd., Suite 210
Santa Fe Springs, CA
90670
(562)944-1300
 
Charging Party
Notification
Arce, Frank
Communications Workers of America, District 9
7200 Somerset Blvd, Box 1839
Paramount, CA
90732
(916)921-4500
 
Charged Party / Respondent
Legal Representative
Piggott, Vance
Kronick Moskovitz Tiedemann & Girard
1331 Garden Hwy
2nd Floor
Sacramento, CA
95833
(916)321-4589
 
Charged Party / Respondent
Employer
Museum of Science and Curiosity (MOSAC)
Sacramento, CA
95811
 
Charging Party
Union
Communication Workers of America Local 9421
Sacramento, CA
95821
 

Related Cases


Related Cases data is not available.