It comes a week after Albury Wodonga Health removed CCTV from Nolan House, in line with guidelines from Victoria's Chief Psychiatrist who had concerns for patient privacy.

An AWH spokeswoman said there was no connection between HSU's statewide industrial action and Nolan House, highlighting that they were "distinctly different matters".

She said the organisation was continuing to work with staff to address any concerns about the CCTV changes.

But Health Services Union secretary Gerard Hayes said the removal of CCTV equated to a safety 'downgrade' which was unacceptable.

IN OTHER NEWS:

"Moving away from any supportive mechanism at this point in time is certainly not taking security in hospitals seriously," he said.

The spokeswoman said AWH was still ascertaining how many staff, if any, would be taking part in industrial action and once this was known "measures will be put in place accordingly to ensure patient safety and care is not compromised".

"AWH has a zero tolerance to occupational violence in the workplace and does not tolerate aggression or violence towards our staff in any way," she said.

Mr Hayes said 22,000 public health workers and paramedics, including 500 in Southern NSW and 50 in Albury, will stop work for four hours on Thursday.

He said the union wants 250 more security officers stationed at NSW hospitals. Mr Hayes said violence in hospitals was becoming commonplace.

"When you think of incidents these days, you think of serious incidents, assaults or deaths," he said.

"Just verbal abuse, being spat at, being shoved, all barely rate a mention anymore.

"Everyone has right to go to work and feel safe."

NSW health minister Brad Hazzard previously said they heard members' concerns, but action would take time.