Of or pertaining to a labor protest in which employees do only the minimum work required by the rules of a workplace, following safety or other regulations to the letter in order to cause a slowdown
Disgruntled by chronic staff shortages, doctors threatened a “work-to-rule” action at the East London Hospital Complex by the end of this week.
a situation in which people in a particular job refuse to do any additional work as a protest strike work to rule work (32)