I think it's the user more than the OS, so maybe the chart says more about the users of those machines. I've not had any problems of that sort except on the pc I built for my dad.
Where do you live? In Arkansas, it's as easy as saying "You're fired!" for non-union hires, and there aren't that many unionized jobs here.
A guy I used to go to church with worked hard to keep businesses that paid higher than $9 and hour out of this area. That included two non-union auto...
I am so jealous of all these beautiful desks. The nearest ikea to me is a 7 hour drive, and I've not seen any desks or tables on craigslist in my area. Someday!!
It's based on percentages. If they are going to be doing more than a certain percentage of change on the room/home/etc then they have to update that to code. Figuring out the percentages is a huge headache.