Its like the gas company around here.
We did sewer and water hookups on project this year and the road was pretty thick. After cutting it we tried to break it with the 310 and it wouldn't so we switched to the Volvo 160 with the little trench bucket and it did it fine.
About 3 weeks later we called the gas company to have a hook up done to one of the houses. They come out with a Case backhoe which is about the same size as our 310. They got the road up with that thing, we were cringing as they were beating it to death. The whole thing was covered in oil from blown hoses, everything was lose and sloppy on it too.
When they don't own the machines they tend to beat them, my uncle has fired a number of guys who beat his equipment. Bottom out a cylinder all the time and he will kick you off the machine.