In General, when the work has passed one stage may be unnecessary things accumulate in the workspace, such as the document is not used, scrap paper, paper box. When there is no need to use then it should clear up things.
As a general practice over time may have accumulated in the area of unnecessary items like documents, non-use of waste paper, paper boxes when not required for use. It should be clear these things out of the work area.
Generally when working a period of time may have things need to accumulate in areas such as documents, work is no longer in use, waste paper. Paper box, when there is no need to use, it should clear up materials.