| As the Board spelled it | Cases | States |
|---|---|---|
| Marathon Petroleum | 19 | CA, MI, MN, TX, UT, WA |
| Marathon Petroleum Company | 13 | CA, MI, MN, OH, TX, UT |
| Marathon Petroleum Company LP | 12 | CA, MI, OH, TX, WA |
| Marathon Petroleum Corporation | 10 | CA, ID, ND, TX, UT |
| Marathon Petroleum Corp. | 4 | CA, ND |
| Marathon Petroleum Company LLC | 2 | OH, TX |
| Marathon Petroleum Corporation, LLC | 2 | MN |
| Marathon Petroleum Co. | 1 | CA |
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.