DCC PLC (LSE:DCC)'s chief executive Donal Murphy is stepping back from his day-to-day duties while a medical condition is assessed.
In a statement, the Irish international sales, marketing and support services group said Murphy will remain involved in the business and his day-to-day responsibilities will be assumed by chief financial officer Kevin Lucey.
Murphy is expected to make a full return to work before DCC's AGM in July.
"Donal has the best wishes of all his colleagues on the board and across the group," DCC said.
DCC's annual results for the year to 31 March 2023 will be released on 16 May.