Representatives from Lyttleton Port Co and the Maritime Union of New Zealand reached an agreement in principle and all strike notices have been lifted.
Lyttelton Port is now returning to normal operations, marketing manager Simon Munt said in a statement on the company's website.
A spokesman from the Maritime Union confirmed today that an agreement in principle had been reached and would be put to MUNZ members this week for ratification. "We've got a good feeling about it," he said.
The port's Munt said the fact that strike notices were lifted was an "extremely positive development as we move much closer to achieving settlement".
Between 160 and 180 Lyttelton Port employees are part of the Maritime Union covered by the collective contract for the container terminal, which employs more than 250 people. Port management wants to line up work rosters more closely with the company's operating needs.