Idema (Unilever)Strike, against massive lay off - 1977Strike, against massive lay off - 1982Strike, diminished working hours - 1985Strike, wage demands excluding wage raise - 1988Strike, against a bankruptcy or closing down - 1989blockade, state regulations regarding labour conditions - 1896Strike, - 2011Strike, wage raise - 1906Strike, wage raise - 1917Strike, wage raise - 1922Strike, wage raise - 1925