Maybe you could convince your workplace to install an outlet like this one.
http://www.homedepot.com/p/GE-20-Amp-Backyard-Outlet-with-GFI-Receptacle-U010010GRP/100550096
http://www.homedepot.com/p/GE-20-Amp-Backyard-Outlet-with-GFI-Receptacle-U010010GRP/100550096