It has been reported on this forum that installers of Office 2013 purchased via company benefits plans are ONETIME, ONE COMPUTER online installers. So, unless you have Office 365 subscription you are pretty much permanently locked to one computer.
In other words, you get an exe file of about 300-400 KB. This thing has a key embedded in it. Once you will start it, it will download Office 2013 installation files.
This function is a onetime function. Likely, it wont work again even on the same computer.
You won't be able to REinstall your Office 2013 even for this current computer with the very same file.
You would have to purchase some extra backup dvd in order to be able to reinstall it EVEN ON THE SAME computer.
Thus, indeed Office 2013 available via company benefits plan is likely locked to ONE computer and ONE installation on this computer (if you have your hdd wiped and will try to reinstall it on the same computer without extra backup dvd it WON'T work).
More info Office 2013 ProPlus Home Use download
and Microsoft Office 2013