Almost 100 health workers were recognised today for delivering more than 2400 years of service to the northern Tasmanian community, Minister for Health Michelle O'Byrne said.

At a ceremony in Launceston, Ms O'Byrne thanked 96 Tasmanian Health Organisation - North (THO-N) staff who have achieved 25 years or more continuous service.

"This dedication to health care is a credit to the individuals themselves and speaks to the very best of our health care system," Ms O'Byrne said

"It is important that we acknowledge the commitment of these staff members, which has helped deliver the quality health services our community relies on in times of need."

Ms O'Byrne said the recipients came from across the THO-N workforce including doctors, nurses (acute care and community), allied health and food services staff, and administrators.

"The number of staff reaching the 25 year service milestone, and the low turnover, is evidence that the THO-N workforce is dedicated and loyal," she said.

"The wealth of knowledge, skills and commitment each brings to work every day at the Launceston General Hospital and across our other rural health facilities and sites is recognised and greatly appreciated by patients and visitors."

The award ceremony came as the Launceston General Hospital itself prepares to mark 150 years of caring for the northern Tasmanian community.

A week has been set aside in May 2013 to mark the hospital's sesquicentenary.

The hospital's historical committee is organising a number of events including hospital tours, an art exhibition and historical seminars to mark the date.