Whanganui District Health Board is putting together a plan for when 17 of its resident doctors go on strike.
WDHB chief executive Julie Patterson said she had received confirmation from the New Zealand Resident Doctors Association that its members would strike from October 18 to October 20.
Mrs Patterson said the DHB would ensure "as many services as possible" were maintained during the industrial action.
"Because only 17 of our 38 [resident doctors] are members of the union, the disruption to services in Whanganui will be less than we were originally expecting."
She said that if any services do need to be postponed, patients affected will be directly contacted by the DHB.