Beating unemployment

A joke from the evil Soviet times:

- How come there is no unemployment in the Soviet Union?
- In the morning, a team comes and digs a hole. In the afternoon, another team comes and fills it up.

A couple of days ago there was a smell of gas in our kitchen. Staffan called British Gas, and there was a man within 45 minutes crouching under our kitchen sink. Then there was a huge vehicle in our yard. I was hiding in my study, but Staffan reported that they were digging up the yard to find the leak. Then they went, leaving behind a somewhat oversized enclosure. This morning another huge vehicle came to fill up the hole.