Frost, who has held the CEO role for ten years, will be replaced by Swiss Life's current finance chief Matthias Aellig, effective May 16, the company said in a statement.

The company's shares were down 1.7% in early morning trading.

"We regret Patrick Frost's retirement as CEO," Vontobel analyst Simon Foessmeier said.

"A significant part of Swiss Life's success in recent years has been the quality of the management team."

Swiss Life Chairman Rolf Doerig said incoming CEO Aellig had "played a key role in helping Patrick Frost shape the strategy of the entire Group".

Swiss Life also announced the promotion of Marco Gerussi to CFO and additional leadership changes at Swiss Life Germany.

(Reporting by Noele Illien, Editing by Rachel More)