I was reading about plane de-icing the other day, and someone posted a comment saying that was their job, and when no planes needed de-icing they just slept/waited in the de-icing truck.
I was looking just now at de-icing jobs, and found one at heathrow that said it was a permanent 40-hour/week job.
So what do they actually do during summer? Do they do a different job or do they just wait in case a random (unlikely) snow storm passes by?