Tasmania’s Opposition is sounding an alarm about the conditions imposed on the state’s paramedics.

Labor and the paramedics’ union say workers are being stretched to the limit, working longer hours to cover for below-demand staffing.

The Health and Community Services Union (HACSU) and the Opposition say the amount of overtime hours worked by paramedics has shot up under the current Liberal Government.

HACSU's state secretary Tim Jacobson said there were simply too few ambulance paramedics to fill basic rosters.

“The level of vacancies over the next week-and-a-half is somewhere in the order of 50 vacant shifts,” he told ABC reporters.

“People are working so much overtime that it is affecting their health.”

Labor's Rebecca White said the situation was unsustainable.

“Staff are under enormous strain when they're at work due to understaffing and then they are being asked to come in to fill vacant shifts on their days off,” she said.

Ambulance Tasmania CEO Dominic Morgan put out a statement saying the massive overtime demands on staff were due to a “large amount of unplanned leave”.

He claimed that overtime rates in 2014-15 were the lowest in five years.

But the Government insists that help is on the way.

Emergency Management Minister Rene Hidding said 14 new paramedic interns would soon be offered permanent positions, following a selection process.

He also took the opportunity to blame Labor.

“The situation we inherited is still the situation, but there are more interns coming on as we speak, and that will resolve the situation,” he said.

“From time to time, of course, all these agencies of course go through unplanned leave issues.”

Mr Hidding said the Government was also taking on 12 new paramedics in the Devonport and Latrobe areas.