| As the Board spelled it | Cases | States |
|---|---|---|
| Master Security Company, LLC | 83 | DC, MD, NC, VA |
| Master Security | 8 | DC, MD, VA |
| Master Security, LLC | 7 | DC, MD |
| Master Security, Inc. | 3 | DC, MD |
| Master Security Company | 2 | DC, MD |
| Master Security Company, Inc. | 1 | DC |
Last refreshed 22 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.