Job action and Tie-up

Job action noun - A temporary action by workers to protest management decision or to make demands.

Tie-up and job action are semantically related. in work stoppage topic. In some cases you can use "Tie-up" instead a noun phrase "Job action".

Tie-up noun - A crowded mass (as of cars) that impedes or blocks movement.

Job action and tie-up are semantically related. You can use "Job action" instead a noun phrase "Tie-up".