Workers at Port Waratah Coal Services will strike again this Friday as part of an ongoing industrial dispute.
The Maritime Union of Australia said the stop-work action would take place from 6:30am to 2:30pm this Friday.
More than 200 Port Waratah Coal Services workers voted to take action after failing to agree with conditions in new enterprise agreements.
Talks between the union and PWCS yesterday again failed to resolve the eight-month dispute.
Last Wednesday they engaged in a four hour work stoppage.
MUA Assistant National Secretary Ian Bray said members wanted a fair go.
"We are going forward with a steady campaign of legally protected action as well as a broader strategy to bring justice to our members," he said.
Maritime Union of Australia branch secretary Mick Forbes said PWCS wants to change enterprise bargaining clauses related to dispute settlement and contracting
Forbes described the proposed changes as “union busting”.
The MUA claim anti-union proposals in the new agreements seek to undermine the safety and health of workers and tear up longstanding settlement procedures around contract issues.
PWCS told Australian Mining the company had been open in its negotiations.
“PWCS has been negotiating in good faith since July last year,” the spokesperson said.
“There is nothing that PWCS is proposing or seeking to negotiate in the new agreement that does not respect the rights of employees to belong to a union, or to be represented collectively.”
The spokesman said contingency plans are in place should the strikes go ahead to mitigate impacts to the local supply chain.