Staff at a troubled Tasmanian youth detention centre are set to strike on Tuesday.

Ashley Youth Detention Centre (Ashley) employees are set to participate in joint stop-work action on Tuesday afternoon to highlight what unions have labelled chronic safety risks and severe understaffing.

The strike will see Health and Community Services Union (HACSU) members and Community and Public Sector Union (CPSU) employees protest what they say are unsafe work conditions and prolonged uncertainty about the facility's future.

The strike action is anticipated to affect almost all functions at Ashley, including security, site access, supervision, transport, kitchen and administration.

National Indigenous Times understands the strike will also restrict the movement of young people at the facility for its duration.

"Workers at AYDC are left with no choice but to take industrial action," HACSU said.

The planned strike action comes a week after the United Nations condemned the treatment of young people at the centre in its five-yearly Universal Periodic Review.

Previous to the UN report's release, the Tasmanian Aboriginal Legal Service and Tasmanian Aboriginal Centre raised significant concerns about the treatment of young Indigenous detainees at Ashley.

Their concerns were raised after the Tasmania's Office of the Custodial Inspector highlighted "significant inconsistencies" in the Department for Education, Children and Young People's (DECYP) safeguarding of those in their care at the centre.

The Custodial Inspector's report prompted the National Network of Incarcerated & Formerly Incarcerated Women and Girls to label the treatment received by Ashley detainees as "torture-adjacent practice".

The stop work action is scheduled to be held from 1:15pm to 3:15pm.