It will cost hospital visitors $6.80 to park in the new car park for less than an hour, although the first 15 minutes of parking will be free.

For one-to-two hours it will cost users $10.10, or up to $20.20 for the whole day.

In comparison, at Royal Prince Alfred hospital in Sydney it cost $6 to park for one hour or $14 for two. For Wollongong Central Shopping it costs $3.50 to park for up to three hours.

The multi-storey car park at Shoalhaven Hospital is scheduled to open on December 16, 2019.

Wilson Parking will run the car park and one dedicated parking attendant will be on site between 8am and 4pm.

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In a letter to Shoalhaven City Council, the Illawarra Shoalhaven Local Health District said the NSW Ministry of Health's Car Parking Fees Policy fees will be charged for staff, patients and visitors to use the car park. It noted the fees will be used to cover the operating cost of the new car parking facilities not for the delivery of clinical services.

Some concerns have been raised by staff about the lack of car parking spaces allocated to hospital employees.

Writing to the South Coast Register, Sonia Keeling from Erowal Bay said staff had been informed 130 spaces were allocated to them and all other parking on the site would be restricted to two hours.

"To make matters worse, we have been informed only 130 parking spaces will be initially allocated to staff on a first-come, first-serve basis," she said.

"There are well over 400 staff working at the Shoalhaven Hospital, so if you are not allocated a space, same problem as before - where are you supposed to park without getting fined?"