Supermarket giant Woolworths could face strikes at Victorian and NSW distribution centres as 2000 staff push for pay rises and job certainty.
The National Union of Workers last week lodged applications in the Fair Work Commission flagging possible strikes.
"Workers at four Woolworths distribution centes have applied for Protected Action Ballots," a union spokeswoman told AAP on Sunday.
"The number of workers across the four sites is approximately 2000."
The union is pushing for pay rises and more job security, with uncertainty over the future of the centres' operations.
A Woolworths spokesman said the company was negotiating with staff.
"We will continue to work with our team members and their chosen representatives to get the right outcome at each of our sites," he said.
"Our number one priority will remain our team members and the service to our customers."
Staff at the centres still have to vote on whether they will agree to go on strike.
