People who don't do their work irritate me

[Cadaverous Pallor]

I'm in agreement with iSm.

If someone else must do what I need, I've gotten in the habit of giving earlier deadlines than necessary. "I've got a lot more work to do on this project so I need this in the next hour. Thanks." It's so hard to set a hard line but it usually works well. If the deadline is early enough, they can be late and it's still great.