Strike, state regulations regarding labour conditions - 1982Strike, against the results of a reorganization - 1979Strike, against the results of a reorganization - 1980Strike, against a wage cut - 1982demonstration, organization of work - 1923work-to-rule, - 1970demonstration, against the results of a reorganization - 1974work-to-rule, general company policy - 1983Strike, wage raise - 1917Strike, wage raise - 1918Strike, wage raise - 1917Strike, - 1919Strike, - 1918Strike, wage raise - 1920Strike, wage raise - 1926