Frequently, when I am just about to leave my workplace, my co-worker asks me to pass him something that he needs (to do his work) about 5 minutes before work time ends. Sometimes, I do not have it ready at hand. And I do not want to keep him waiting for my work before he can do his.
I will be in a very stressful situation and because of that, I am unable to go home on time.
How do I tell him to let me know earlier what he needs so that I will be able to get it done before work ends and pass it to him?