Bien-Zenker Chef at “Undercover Boss” (RTL): That is his biggest fear
2020-07-14T19:12:32.006Z
At "Undercover Boss" (RTL), Bien-Zenker boss Marco Hammer went to a construction site and secretly mingled with his employees there. In the TV show on Monday (8:15 p.m.), the managing director of the Schluechtern company revealed what he was afraid of.