Salting is an #organizing tactic in which a person gets a job at a specific workplace with the goal of #unions for coworkers. This kind of shop-floor organizing has a long history within the #labormovement, #solidarity is the most normal thing in the world so start talking to your coworkers about #unionizing as soon as you learn their names.
https://www.teenvogue.com/story/what-is-salting-organizing-tactic