Master Security

8 cases in this site's copy of the record  ·  0 of those 8 are marked open by the Board  ·  Region 05  ·  Arlington, VA; Cockeysville, MD; Washington, DC

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

What kinds of case

The cases

• Charge against an employer

  CA
  Filed 19 November 2018Case 05-CA-231350ClosedCockeysville, MDRegion 05
• Charge against an employer

  CA
  Filed 13 June 2016Case 05-CA-178175ClosedWashington, DCRegion 05Workers in the unit 100
• Petition for an election

  RC
  Filed 26 September 2014Case 05-RC-137564ClosedWashington, DCRegion 05Workers in the unit 10
  Included: All full-time and part-time armed and unarmed protective security officers and lead PSO/Sergeants performing guard duties as defined in Section 9(B)(3) of the National Labor Relations Act, employed by Master Security at Mobile Search, 12th & C Street, Washington, DC. Excluding: All office clerical employees, professional employees and supervisors as defined by the Act.
• Petition for an election

  RC
  Filed 7 February 2014Case 05-RC-122141ClosedArlington, VARegion 05Workers in the unit 10
  Included: All full and part-time security officers employed by the Employer Excluded: All other employees, including offices clericals, lieutenants, captains and any other supervisors as defined and determined by the National Labor Relations Act.
• Petition for an election

  RC
  Filed 16 September 2011Case 05-RC-064608ClosedCockeysville, MDRegion 05Workers in the unit 12
  Included: All full-time and regular part-time security officers and sergeants employed by the Employer at the Mobile Scan site located at 300 12th and C Street, NW, Washington, DC 20407 Excluded: All office clerical employees, professional employees and supervisors as defined in the Act
• Charge against an employer

  CA
  Filed 27 July 2011Case 05-CA-061756ClosedWashington, DCRegion 05Workers in the unit 100
• Petition for an election

  RC
  Filed 17 February 2010Case 05-RC-016416ClosedWashington, DCRegion 05Workers in the unit 70
  Included: All regular full-time and part-time security officers employed by the employer at the Housing and Urban Development operations at 451 7th Street, S.W., in Washington D.C. (HUD) Excluded: All office, clerical, professional employees and supervisors as defined by the Act.
• Petition to decertify

  RD
  Filed 3 March 2009Case 05-RD-001459ClosedWashington, DCRegion 05Workers in the unit 28
  Included: All full-time and regular part-time security officers, sergeants, and lieutenants employed by the Employer at Ronald Reagan Washington National Airport in Washington, DC Excluded: All captains, managerial employees, office clerical employees, professional employees, and supervisors as defined in the Act.

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