A pulp and paper mill worker who said he was "away with the birdies" during training had earlier potentially put his colleagues in danger by failing to securely close pipes carrying caustic, hot liquid, the Employment Relations Authority says.
Warren Wilton was working as a caustic and kilns operator at Carter Holt Harvey's Kinleith Mill in Tokoroa.
The authority said the company rightly sacked him after he failed to correctly complete training programmes put in place after incidents that could have proved dangerous for his workmates.
An important part of his job involved opening and/or closing valves to isolate the flow of liquids away from the area of the plant that required maintenance or repairs, and then returning the valves to their original position for work to restart.
Authority member Tania Tetitaha said that in May last year, Mr Wilson was working on a "liquid clarifier" when he failed to return the valve to their position when it was needed to run.