Chairman Federal Board of Revenue (FBR) Shabbar Zaidi on Sunday said that he would resume office on January 20 (Monday). According to a tweet of Shabbar Zaidi, "Alhumdulillah, feeling better. Had tests and treatment done at Gastro Deptt of SIUT Karachi. Diagnostic reports are OK. Mild inflammation in track. Doctors advised 15 days rest. Inshallah will join on 20th January. Thanks to all who sent well being messages. Pray for early recovery," the FBR chairman added.