Jun, along with six other South Korean stars (Jung Woo-sung, Kim Sun-a, Jo In-sung, Ji Jin-hee, Cha Tae-hyun and Yang Jin-woo), sued local monthly movie magazine Screen in 2006 for commercially using their pictures without permission [REF].
In 2011, SidusHQ CEO Jung Hoon-tak was accused of illegally using Jun's bank account to pocket profits from a merger and acquisition.