Bos semi-retired from national politics and became active in the private sector and public sector, in October 2010 Bos was named as a management consultant for KPMG. After the election of 2012 Bos was appointed as co-Informateur for the cabinet formation of 2012. In August 2013 Bos was nominated as chairman of the board of directors of the VU University Medical Center. In September 2018 Bos was appointed as chairman of the board of directors of the Netherlands Investment Agency, taking office on 1 October 2018. Bos also serves as an lobbyist for several economic delegations on behalf of the government.