The same day, the state government vowed to name and shame private aged-care homes if they refused to reveal how many nurses were caring for their residents.

Premier Annastacia Palaszczuk also vowed to pass new laws requiring the 16 state-owned aged care homes to provide a minimum standard of nursing care - 3.65 hours of nursing, per resident, per day.

Earle Haven was ransacked and stripped of medical equipment, fridges and computers after a dispute between the owner, People Care, and the subcontractor running the facility, HelpStreet.

Authorities were made aware of the dire situation when one of the few remaining staff members at the facility called triple-zero after most of the other staff had walked out.

It took 32 paramedics and a dozen hospital staff to evacuate the residents. Three were hospitalised and the rest were moved to alternative care facilities.

At the QNMU annual conference on Wednesday, more than 300 delegates voted in support of an emergency motion in response to the crisis at Earle Haven.

"We need to know what is happening in the long term for these close to 70 residents in temporary accommodation, they need permanent homes as soon as possible," union secretary Beth Mohle said.

"We call upon the Minister for Aged Care (Richard Colbeck) to actually support the aged care workers who have been affected by this ... We’ve also called upon the minister to take urgent steps to ensure that the regulation is appropriate and to ban subcontracting arrangements in aged care."

Federal government MP Angie Bell, whose electorate takes in the facility, said federal government investigators were looking at what happened.

She said she had no doubt the aged care royal commission, due in Brisbane from August 4 to 8, would examine the shutdown in detail.

Ms Mohle described the situation as "the poster child" for the flaws in aged care regulation and vowed to refer the matter to the royal commission.

She also called upon the Aged Care Quality and Safety Commission to release its report into conditions and what went wrong at Earle Haven. Officials visited the site following the closure.