Health Minister Sarah Courtney announced on Wednesday that the ED would reopen all hours from Monday November 30.

She said it was due to the recruitment of three senior specialist positions and five longer term locums.

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"Recruitment will continue for permanent staff, and we're bolstering training pathways to underpin these positions," she said.

She said the long wait was to make sure it wasn't just 'a simple band aid solution'.

"We have challenges getting staff to these regional areas. It's taken some time to make sure we had the recruitment embedded."

Labor leader Rebecca White welcomed the news, but urged the government to focus on finding permanent staff.

"This will be a great relief to the public and the health workforce," she said.

"It's taken a long time, and has put huge pressure on the Launceston General Hospital and Burnie while they've dealt with the increased demand.

"It will ease the pressure on them.

"We encourage the government to recruit permanent staff to keep the doors open so we can secure the future of the Mersey Hospital."

Ms Courtney said the Tasmanian Health Service aimed to convert as many of the locum roles into permanent positions as possible.

"We will focus on how we can get more permanent staff here at the Mersey as well as at the North West Regional Hospital," she said.

"It's a great hospital to work in here. I'm really excited about the future and the opportunities at this hospital and the NWRH.

"I'm confident we will be able to make more headway in permanent recruitment."

Latrobe mayor Peter Freshney said the news was fantastic and a great relief.

"Particularly pleasing is the recruitment of those three permanent specialists and also that the locums will be long term," he said.

"My personal hope is that they really get to appreciate what it's like to live in a welcoming community. Ideally, they would choose to stay permanently."

Steve Martin, of the Mersey Community Hospital Support Group, said it was a great win for the community, but not a win for the government.

"The Mersey, along with $730.4 million, was handed back to the government three years prior to the pandemic," he said.

"The government had the money, the time and the opportunity to ensure the sustainability of the ED and it failed to do so, putting our community at risk."