New Zealand Business By Jason Duop / 13 January 2015 Lyttleton Port and a Worker’s Union are embroiled in a heated dispute with the port workers caught in the middle. Safety concerns have caused the container terminal to be shut for overnight shifts for three consecutive weekends. It has been closed between midnight at 6am.The Rail and Maritime Transport Union (RMTU) told Stuff.co.nz yesterday workers were now tired of the continuing dispute and wanted a resolution. Unfortunately this resolution doesn’t appear to be insight.The two sides hold different views on many issues. Some of these issues include pay levels, the formulation of a joint industrial council to develop a relationship over health and safety and productivity and the inclusion of inland port workers in a general collective agreement.Frustrated also spiked after managers went on holiday leaving union workers to be wound up.