CementbouwHeinekenStrike, against a bankruptcy or closing down - 1978Strike, against massive lay off - 1990Strike, wage raise - 1994Lockout, collective agreement demanded by the employees - 1913Strike, against the results of a reorganization - 2005Strike, against a worsening of the pension scheme - 2004Strike, wage raise - 2011Strike, wage raise - 2001Strike, wage raise - 1904Strike, - 1915Strike, wage raise - 1913Strike, - 1917Strike, against a wage cut - 1924Strike, wage raise - 1930