The retail workers' union is taking Woolworths to the Fair Work Commission over the shopping giant's recent announcement of a company-wide restructure.

Woolies last week announced it would be shuffling staff members around to make way for a new operating model.

Watch in the video above: Woolworths staff may face redundancy despite supermarket claiming no job cuts

While it said it wouldn’t be reducing headcount, staffers were given booklet guides to redundancies and “redeployment”.

The SDA, or Shop, Distributive and Allied Employees' Association, represents workers in retail, fast food and warehousing.

'Not genuine'

“The SDA has serious concerns that (Woolworths) failed to properly consult workers and the union and that many of the planned redundancies are not genuine,” the union said in a post to its Facebook page.

“The proposed changes are in no way connected to the new Woolworths Agreement and is not something the SDA had any input into,” it said on its website.

“Remember, you must be consulted on changes to your employment and you should not feel pressured or rushed to make any decision.”

In a phone screenshot sent to 7NEWS.com.au, the SDA seems to have notified its members of the action against Woolworths via a text message.

The SDA seems to have sent out this text message to its members. Credit: Supplied

The SDA has been contacted for comment.

Woolworths responds

A Woolworths spokesperson told 7NEWS.com.au the supermarket has "been proactive in consulting with the SDA on the new operating model, including during the pilot program rolled out across more than 25 stores in March".

"We’ll continue to consult closely with our team members and their representatives on the transition over the coming months.

"Our immediate focus is identifying as many redeployment opportunities as possible for impacted team members across our business.

"Under the new model, we’re creating more customer-facing leadership roles to help deliver better service to our customers and to meet their changing shopping needs.

"Importantly, the changes will not lead to a net reduction in the overall number of team members we employ in our stores.

"As the retail market continues to evolve, we need to ensure we’re set up to deliver for our customers, so we can continue supporting more than 115,000 Australian jobs in our supermarkets."