Major supermarkets have reassured customers there are no milk shortages or buying limits in place as Victorian dairy workers walk off the job for a second day.
More than 1400 workers from dairy producers Fonterra, Saputo, Lactalis and Peters are striking for 48 hours as they demand better pay and conditions.
The processing staff at 13 regional and metro sites started their industrial action on Wednesday.
Coles, Woolworths and Aldi say there are no milk shortages at their supermarkets and the companies have no plans to introduce buying limits.
"We are continuing to work closely with our suppliers to help ensure milk is available to our customers," a Coles spokeswoman told AAP on Thursday.
Any potential impacts would be limited to Victorian stores but there were measures in place to ensure there was no significant impact to supply, a Woolworths spokeswoman said.
"We're in close contact with our Victorian milk supplier and we're working on contingency plans to minimise any potential disruption to our customers," the company said in a statement.
Fonterra confirmed it was continuing to collect and deliver milk from dairy farmers amid the strike action.
"Our primary focus was to ensure that all of our farmers' milk was collected and ready to turn into dairy products that our customers love," supply chain and operations director Rob Howell said.
The United Workers Union said major dairy producers had failed to offer striking workers fair wages and conditions amid rising living costs.
Workers were also seeking paid emergency service leave so Country Fire Authority volunteers could attend natural disasters.
"You can't run a dairy processing plant if all the dairy farms are burnt out," the union's national secretary Tim Kennedy said.
"Emergency service leave is one of the reasons these workers are on strike because they know how important their volunteering during emergencies is to others in their regional community."
Fonterra remained focus on negotiating in good faith with its workers, Mr Howell said.
Peters Ice Cream was also open to continuing negotiations, a spokesman said.
"Peters offers the best employment conditions in the ice cream industry, paying its factory workers 70 to 80 per cent above award," a statement to AAP said.
Lactalis said it was doing everything it could to ensure dairy farmers wouldn't have to dump their milk because of the strike.
"We expect there to be some disruption and possible milk collection delays," the company said.
Saputo was approached for comment.
Victorian Premier Jacinta Allan urged all parties to go back to the negotiating table and said there was no need to panic buy.
"I believe there has been some movement overnight on some of the negotiations between the parties," she told reporters.
"But I am also advised that there doesn't need to be any panic buying, that there is sufficient supply, as the diary industry has been preparing for this potential disruption."
