The Industrial Relations Commission is recommending nurses end their work bans.
But, the nurses are refusing to comply.
The IRC has recommended nurses scrap the bans which have seen one in five public hospital beds closed.
The nurses had taken the action in pursuit of a pay increase of 20 per cent over three years.
They are now seeking a 15 per cent pay rise over that period.
"We are at a volatile time in our hospitals," he said.
"What we would like to see is a position that we can agree to on wages and parking before the election, then all other matters can be dealt with after the election."
Mr Olson says members are determined to get a fair offer.
"We will take any offer back to our members but I know what our members will accept," he said.
"At the mass meeting they were pretty clear that 15 per cent was their bottom line however whatever the Government puts towards me I will take to the members; they are the ones that make those decisions."
The Director General of Health Kim Snowball says he is expecting nurses to comply with the IRC order.
"I am expecting all of those beds to now be re-opened and patients admitted," he said.
"I am looking forward to our hospitals returning to normal."
Mr Snowball says if nurses do not lift the bans, the matter will return to the IRC.
"The expectation is, and still is, that the ANF lift their work bans on the basis of the commission's recommendations so I have sent out a global email notifying all staff of that," he said.
Mr Snowball says he will seek an urgent hearing in the IRC it it does not happen.