The latest report tabled on Thursday - the last of a three-year cycle of reports into the centre - was based on a site inspection in August 2019 and detailed "unsustainable and unacceptable" overtime and breaches of industrial instrument and fatigue policies.

There was no on-site oversight or recording of current National Police Checks or Working with Vulnerable People checks.

At the time, 12 out of an active 63 employees had workers compensation claims.

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The report described the then-staffing shortages as "dire" with no human resources presence on-site.

A range of recommendations were made, and Custodial Inspector Richard Connock has since noted that changes in the Ashley leadership and management teams had improved conditions for staff.

"Most notable is the improvement to staff morale which previously contributed to a host of underlying issues within the workforce," he said.

"It is pleasing to see this progression which places AYDC in a better position to address recommendations outlined in this inspection report."

While staffing matters have started to improve, there were still shortcomings regarding record management and the completion of resident care plans.

During the inspection, folders for new residents were sampled at random, but they "were all empty folders".

Case plans were not being undertaken nor assessments completed, the report concluded.

Mr Connock said this was a risk and needed to be improved.

"As previously reported, poor systems and processes has also exacerbated internal operations of the centre with a general lack of understanding about the importance of maintaining accurate and detailed records," he said.

"A particular area of concern is incomplete resident case plans and assessments which determine the course of action for each resident including their overall wellbeing. This is a significant risk which requires urgent attention."

The centre also had no environmental sustainability policy.