The leader of Inverclyde Council, Councillor Stephen McCabe, is to step down from his position next week.
Councillor McCabe, who will also quit as Labour group leader, has held the position since May 2007.
He will continue to represent the Inverclyde East ward.
Councillor McCabe said he had made "personal sacrifices" during a "demanding" time as council leader and now was the right time to "spend more time" with his family.
He added: "I feel deeply privileged to have held the position of council leader for nearly four years and would like to thank my colleagues in the Labour group and the administration for giving me this opportunity.
"I believe that we can be justifiably proud of what we have achieved in that time and the decisions we have taken for the benefit of future generations."