WordNet
work-in
n. occasion when workers continue to work as a protest against e.g. proposed dismissal or closure of the factory
Wikipedia
Work-in
A work-in is a form of direct action, where a group of workers whose jobs are under threat resolve to remain in their place of employment and continue producing without pay. The intention is usually to show that their place of work still has long-term viability, or can be effectively self-managed by the workers.
Usage examples of "work-in".
Hollywood scriptwriter who remained unheralded during his lifetime, but has now received posthumous acclaim for his work-in particular his darkly accurate pictures of smalltime con artists, congenital liars and occasional killers.