common-situs picketing

com·mon-si·tus picketing

 (kŏm′ən-sī′təs) also com·mon-site picketing (-sīt′)
n.
Picketing by unionized employees of a company at a site where another uninvolved company is also at the same location.

[Latin situs, site; see site.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.