ShellTetra PAKStrike, diminished working hours - 1979Strike, diminished working hours - 1991Strike, diminished working hours - 1979Strike, against a worsening of the pension scheme - 2005Strike, against the results of a reorganization - 2014Strike, collective agreement demanded by the employees - 2013Strike, wage raise - 2015Strike, wage raise - 2016Strike, wage raise - 2016demonstration at the factory gate, diminished working hours - 1978Strike, wage raise - 2019Strike, wage raise - 1855Strike, wage raise - 1930