job action

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun An action, such as a strike or slowdown, taken by workers as a means of increasing bargaining power with management.
• noun Law An action taken by an employer that affects an employee's terms of employment, especially adversely.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A workplace protest by employees designed to inconvenience or disrupt the business of the employer, especially one which is limited in duration or severity.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a temporary action by workers to protest management decision or to make demands