As one issue on RIKEN’s “Action Plan for the return to high norms and research fraud relapse prevention”, the top management of RIKEN decided to return the equivalent of a 1- or 2-months salary, depending on the individual involvement in the issue and as a sign of regret
RIKEN news release, Oct. 23, 2014
RIKEN top managers decide on voluntary return of salaries in response to STAP paper fraud