Key staff at Chorley Hospital could be slashed as part of a reorganisation of outpatient clinics.
Lancashire Teaching Hospitals NHS Foundation Trust has begun consultations as part of a review of the pre-operative assessment clinic.
It is thought that reception staff and four special nurse roles could be affected.
Hospital chief operating officer Donna Kendal said was “fully committed to providing the best care for patients”.
She said: “The review of the pre-operative assessment process has included a skill mix review to ensure the right number of staff, at the right level, are available to provide the best possible care and treatment for patients, and to increase choice for patient by extending the hours the pre- operative assessment service is available.
“We are currently working with pre-operative assessment staff to develop a proposal to deliver care more effectively in the future. The future staffing model has yet to be finalised.”
A member of staff for Unison, which represents hospital workers, said concerns had been raised. They said: “Some reception staff would go, even though the opening hours are increasing, and four skilled nurses would also go. Four is quite a critical number, as pre-operative assessments need to be done properly.
“It’s a concern of nursing staff that losing specialist nurses is a danger.”