"We are limiting headcount additions through a targeted hiring freeze," CEO Bob Chapek said in a memo to division leads sent Friday and obtained by CNBC.But that is just what leadership requires, and I thank you in advance for stepping up during this important time."We are not starting this work from scratch and have already set several next steps—which I wanted you to hear about directly from me.In-person work sessions or offsites requiring travel will need advance approval and review from a member of your executive team (i.e., direct report of the segment chairman or corporate executive officer).But that is just what leadership requires, and I thank you in advance for stepping up during this important time."