on chapter 9 part 2: What event caused Winston and his colleagues in the Records Department to have to work so much overtime?

The event that caused Winston and his colleagues to have to work so much overtime in The Records Department was the change in war. The war with Eurasia was officially over, and the war with Eastasia had officially begun. The records department needed to do a quick fix in their department to make sure that history was rewritten to reflect the present.