Maternal and child health nurses at 20 centres across Geelong are expected to take industrial action in a bid for an additional week of annual leave.

Maternal and child health nurses will scale back their non-urgent duties in Victoria's second biggest city as they seek better work conditions.

Forty nurses across 20 centres, employed by the City of Greater Geelong, are expected to take protected industrial action on Wednesday to secure a fifth week of annual leave after it was left off a new enterprise bargaining agreement.

The action means the nurses won't attend work meetings, fill in electronic diaries or do administrative tasks

Australian Nurses and Midwifery Federation Victoria branch secretary Lisa Fitzpatrick said the EBA did not include the same minimum conditions as the Nurses Local Government Award 2015.

"Nurses never take action lightly, but they're extremely angry at the council's refusal of basic nursing entitlements and its disingenuous claim that it has 'offered' five weeks when all it has done is offered to consider an extra week," she said in a statement on Monday.

"Their employer should respect their valuable work by offering the minimum conditions for nurses instead of taking them for granted."

The union and the council began negotiations more than 17 months ago and have agreed to a 2.3 per cent per annum wage rise over four years.

The council offered to consider the extra week of annual leave depending on the outcome of a review of the service which the nurses rejected.