page_title: Strike action
section_title: Variations
hierarchical_section_title: Strike action / Variations
caption_attribution_description: 2005 New York City transit strike
context_page_description: Strike action, also called labor strike, labour strike, or simply strike, is a work stoppage, caused by the mass refusal of employees to work. A strike usually takes place in response to employee grievances. Strikes became common during the Industrial Revolution, when mass labor became important in factories and mines. In most countries, strike actions were quickly made illegal, as factory owners had far more power than workers. Most Western countries partially legalized striking in the late 19th or early 20th centuries.
  Strikes are sometimes used to pressure governments to change policies. Occasionally, strikes destabilize the rule of a particular political party or ruler; in such cases, strikes are often part of a broader social movement taking the form of a campaign of civil resistance. Notable examples are the 1980 Gdańsk Shipyard, and the 1981 Warning Strike, led by Lech Wałęsa. These strikes were significant in the long campaign of civil resistance for political change in Poland, and were an important mobilizing effort that contributed to the fall of the Iron Curtain and the end of communist party rule in eastern Europe.
context_section_description: Most strikes are undertaken by labor unions during collective bargaining as a last resort. The object of collective bargaining is for the employer and the union to come to an agreement over wages, benefits, and working conditions. A collective bargaining agreement may include a clause (a contractual "no-strike clause") which prohibits the union from striking during the term of the agreement. Under U.S. labor law, a strike in violation of a no-strike clause is not a protected concerted activity. The scope of a no-strike clause varies; generally, the U.S. courts and National Labor Relations Board have determined that a collective bargaining agreement's no-strike clause has the same scope as the agreement's arbitration clauses, such that "the union cannot strike over an arbitrable issue." The U.S. Supreme Court held in Jacksonville Bulk Terminals Inc. v. International Longshoremen's Association (1982), a case involving the International Longshoremen's Association refusing to work with goods for export to the Soviet Union in protest against its invasion of Afghanistan, that a no-strike clause does not bar unions from refusing to work as a political protest (since that is not an "arbitrable" issue), although such activity may lead to damages for a secondary boycott. Whether a no-strike clause applies to sympathy strikes depends on the context. Some in the labor movement consider no-strike clauses to be an unnecessary detriment to unions in the collective bargaining process.
  Occasionally, workers decide to strike without the sanction of a labor union, either because the union refuses to endorse such a tactic, or because the workers concerned are non-unionized. Such strikes are often described as unofficial. Strikes without formal union authorization are also known as wildcat strikes.
  In many countries, wildcat strikes do not enjoy the same legal protections as recognized union strikes, and may result in penalties for the union members who participate or their union. The same often applies in the case of strikes conducted without an official ballot of the union membership, as is required in some countries such as the United Kingdom.
  A strike may consist of workers refusing to attend work or picketing outside the workplace to prevent or dissuade people from working in their place or conducting business with their employer. Less frequently workers may occupy the workplace, but refuse either to do their jobs or to leave. This is known as a sit-down strike. A similar tactic is the work-in, where employees occupy the workplace but still continue work, often without pay, which attempts to show they are still useful, or that worker self-management can be successful. For instance, this occurred with factory occupations in the Biennio Rosso strikes – the "two red years" of Italy from 1919 to 1920.
  Another unconventional tactic is work-to-rule (also known as an Italian strike, in Italian: Sciopero bianco), in which workers perform their tasks exactly as they are required to but no better. For example, workers might follow all safety regulations in such a way that it impedes their productivity or they might refuse to work overtime. Such strikes may in some cases be a form of "partial strike" or "slowdown".
  During the development boom of the 1970s in Australia, the Green ban was developed by certain unions described by some as more socially conscious. This is a form of strike action taken by a trade union or other organized labor group for environmentalist or conservationist purposes. This developed from the black ban, strike action taken against a particular job or employer in order to protect the economic interests of the strikers.
  United States labor law also draws a distinction, in the case of private sector employers covered by the National Labor Relations Act, between "economic" and "unfair labor practice" strikes. An employer may not fire, but may permanently replace, workers who engage in a strike over economic issues. On the other hand, employers who commit unfair labor practices (ULPs) may not replace employees who strike over th
caption: 2005 New York City transit strike
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