I have MS Office 2011 Home & Business Edition and it is working fine for me in PB 10.11.1.
My only issue is with Microsoft's arcane activation system. I have owned the product since it's inception and am I allowed a license for 2 machines. I have two machines, a cMP and an MBA. However, I have two system drives drives with my MBA (the internal drive is not the original) and five system drives in my cMP. Microsoft says I have activated my license 11 times over the years, which is probably true. This is due to new drives, new machines, clean installs and etc. Every time I want to reactivate, I need to through a whole song and dance over the telephone, which is extremely time consuming.
On my last call, the representative I spoke to told me that they wouldn't allow another activation. I do not have this issue with any other software that I use. My Adobe products are fine and copy over or install on all my discs and machines as does all my other software. Microsoft is a real PITA regarding this issue
Since MS Office 2016 only allows installation on one machine I am reluctant to upgrade. You'd think it would be OK, since I can only use one machine at a time, but I don't know if their activation scheme has changed and if my activation problems will continue.
Lou