Dear John letters are notorious among lovers, but parking enforcement officers are familiar with a slightly different version of correspondence.
Letters typically begin "Dear a******", members of the New Zealand Parking Association say.
About 70 enforcement officers, mostly from regional and district councils, are in Dunedin for the association's 29th annual conference - a three-day affair at the Southern Cross Hotel.
Camaraderie was vital to those in a "thankless" job, association chairwoman Janice Burns said.
"Nobody's going to say 'thank you very much, you're doing a great job'. You have to be very thick-skinned," she said.