I somewhat agree with Mountain Bob. How big of a place do you work at? I've hung up inspirational messages in the bathroom. I would think you could tape a few in the stalls and see how long they last. You could cycle them out for whatever - DV, An Al Anon phrase, whatever.
Does your employer have an EAP (employee assistance program)? I am tight with those people. They had a free will service so I did that. I have used counseling referrals twice for me and once for DS. The counseling referral line is a counselor, but then they can offer a referral for up to 5 free sessions. That is a great deal. But they too might be willing to send magnets or flyers to pass out to advertise better what they do.