I have a work colleague, for whom, when she has annual leave, I have to cover some of her workload (the time sensitive stuff).
As this only happens a couple of times per year, I always ask her to give me plenty of preparation in advance (she doesn't), and while she's off, I generally put in a lot of extra hours, as I'm having to do her work, plus my own (I'm supposed to be part-time!).
Every time, when she returns from her holiday, she's in a foul mood, there's this terrible atmosphere and she treats me like I've done something wrong for days, (although when I ask there's never anything specific). There's not so much as a "Thanks for covering me while I was away lovedoughnuts' or anything. No appreciation there at all.
This time, before she even went away, she was predicting a delay on her return flight (a week in advance!), saying "I might not make it in on that Monday".
She arrived back at work on Monday (amazingly), and I walked in and said a bright and breezy " good morning", to everyone, and she was the only one who couldn't manage to say "morning" back to me, in fact, she actually looked away, as if I wasn't even there!!
Then she spent the rest of the day slamming things around, because she's 'too busy', there's so much catching up to do - basically insinuating that I had done nothing while she was away (not true), and yet, she had plenty of time to spend, standing around gossiping with anyone who would listen to her droning on about her dreary holiday...and yet she barely spoke to me at all.
She's then decided that she can't possibly answer the phone, as she's just too busy (never mind that I also have catching up of my own to do, as my job gets put on the back burner whilst I cover hers), so I end up having to answer all of the incoming calls too.
I feel so angry at her, that I am going to speak to my boss and ask that he gets someone else cover her in future.