follow up to last post
I worked in Bing long time ago, and then I worked in Azure, Bing WLB was way worse, not sure if that got better recently
how many hours did you typically work at bing?
The problem that work never stopped, everyone was on call all the time, the only difference was where you are on the list, you might be the first one so you get calls more often or further down so in case others didn't pick up or more help was needed you will still be on the hook, the actual working hours were normal, just the added stress of never forgetting about work due to urgent prod issues or emails related to that kept me stressed out.
Based on the results that Bing returns, I'd say WLB is quite good there.