The Food Safety Authority says a suspension on beef exports to South Korea is still in place for a Waikato-based meat processor.
Korean authorities said almost three months that they had found traces of the pesticide endosulfan in a single carton of meat.
The FSA says it is still waiting on a response from South Korea on New Zealand's investigations into the contamination.
Senior market manager Neil McLeod says that although the investigations have not found any traces of endosulfan in the meat, it may not mean that there were no traces in the sample tested by the Koreans.
He says a decision by Korea over whether the export suspension will be lifted has been delayed, but the FSA has had informal indications that it will be made soon.
Last week South Korea also blocked exports of dairy products from the Tatua company, after finding traces of the chemical melamine in one product, Lactoferrin.
The Food Safety Authority is also testing a wide range of New Zealand dairy goods but only minute traces of the chemical have been found so far, in one type of product.