He said it was still waiting for the union to respond to the offer.
Even so, the two sides are expected to get back to the table next Thursday.
Minister of Economic Development Steven Joyce said the Government was monitoring developments in the dispute closely but had not been approached by either side to intervene.
He said New Zealand ports operated in a very competitive environment and it was therefore important for all stakeholders in Auckland's waterfront to work to resolve the dispute.
Fonterra, meanwhile, is preparing to send all exports normally shipped from Auckland through the ports of Tauranga and Napier from the end of this month "until further notice".
"The co-operative made this decision to ensure certainty of supply for its international customers," the company said yesterday.
Although a spokesman said the decision would remain under review, meaning Fonterra may decide to return to Auckland if industrial harmony could be achieved, the two alternative ports indicated they would to their best to keep the new business.
Fonterra exports are worth $5 million a year to Auckland's fully council-owned port, which also blamed the union on its loss of $20 million from the transfer of about 33 per cent of Maersk ships to Tauranga.
The union denies that, saying the Maersk transfer would have taken months to arrange, although it is understood the industrial dispute allowed the Danish shipping giant to get out of a 90-day notice clause.