When workers protest by working very inefficiently what is it called​

Protest

Explanation:

She/he will protest because there was a problem or what i think so

Strike.

Explanation:

Strikes, also known as the workers strike, the labor strike or simply a strike, are the result of the mass rejection of workers. In response to grievances from employees usually, a strike takes place. Strikes became more common during the Industrial Revolution when mass work in factories and mines became important. The strike action was quickly illegalized in most countries, with factory owners having much more power than workers. In the late 19th or early 20th centuries, most Western countries partly legalized striking.

Industrial action is a temporary sign of employee discontent — particularly a strike or slowdown or rule-by-commonwealth — protesting against bad working conditions or low pay and increasing the negotiating capacity with the employer and aimed at forcing the employer to improve them through reduced productivity at a workplace