South Port New Zealand has been ordered to pay nearly $200,000 in fines and reparations for breaching health and safety requirements.
In 2015 a man drowned after his car slid off a wharf which had been contaminated with a superphosphate fertiliser known to be slippery when wet.
While the port knew the wharf was slippery, it did not tell employees about the risk or put up hazard signs.
WorkSafe said there were systemic failings with the port's approach to workplace safety, and staff had not been properly trained.
