Boettger would step down as CEO and director of the SA Pulp and Paper Industries Limited on June 30 after seven years.
“I deeply regret having to make this decision…. However, I believe that spending my time with my family has become the priority and that it is in the best interest of the company and of my family for me to step down as announced,” Boettger said in a statement.
Board chairman Dr Danie Cronje said a process was in place to find Boettger’s successor.
“On behalf of us all I wish Ralph and his family all the very best for the future,” Cronje said.
Boettger, 51, was appointed CEO in 2007. He was previously the executive director of Imperial Holdings Limited.
His field of responsibility included businesses operating in southern Africa, a number of countries in Europe, the Middle East, and Asia.