The Waitaki District Council is losing one of its key second-tier managers, corporate services group manager Stephen Halliwell.
Chief executive Michael Ross said Mr Halliwell would finish with the council in August after almost 10 years on the management team.
During that time he had overseen some major projects undertaken by the council, including the $10.3 million restoration and redevelopment of the Opera House in Oamaru.
"He was a tireless leader throughout that major project and the community has much to thank him for," Mr Ross said.
He had also been involved with implementing a new IT computer system for the council, the Wansbeck St extension down to the harbour which will be officially opened by Prime Minister John Key on May 23 and leading the project for the 320km Alps to Ocean cycleway from Mt Cook to Oamaru.
Mr Halliwell said he would be staying in North Otago and had no definite plans for the future, taking some time out.
"We've been here 10 years and really enjoy what is a positive and vibrant community. We are looking forward to a bright future here," he said.