NSWNMA organiser Jeffery Crebert has urged Wollondilly MP Jai Rowell to commit to the same nurse and patient ratio in Bowral Hospital as in Sydney hospitals.

"We acknowledge that the Liberal Party had announced a $50 million upgrade to the hospital, but it needs to be more than that," Mr Crebert said.

"There needs to be a commitment to the nurse hours to patient ratio.

"Patients at Bowral Hospital deserve the same hours of nursing care as patients at Liverpool Hospital.

"We need a nurse to patient ratio of one to three in the emergency department, one to three in pediatrics and one to one in resuscitation bays and this is what the Labor Party has committed if they were elected."

To push this campaign Mr Crebert has given Wollondilly MP Jai Rowell a "get well Bowral Hospital" card signed by nurses and NSWNMA members.

"The card is asking for an injection of support from Mr Rowell," he said.

"We hope this gets him to acknowledge we need ratios."

Wingecarribee Shire NSW Nurses and Midwives' Association members said they hoped Mr Rowell got the message.

NSWNMA general secretary Brett Holmes said Premier Mike Baird's election pledge to increase frontline nursing and midwifery staff by 2100 full-time equivalent positions failed to address ongoing workload issues in the public hospital system through an expansion of nurse to patient ratios.

"Any effort to boost overall nurse numbers in our state's public health system must be matched with a commitment to improve nurse to patient ratios using the 'nursing hours per patient day' model and mandated state-wide through the introduction of legislation," Mr Holmes said.