Ideally the above suggestions are great but HR people are overwhelmed as it is and it is extremely difficult to get a tete a tete. Do you know someone that is a CEO or corporate executive of a company? Your best bet is an inside link. Then, you will have to make a presentation on ROI. It is great that you are targeting small and mid sized companies because these may not have health promotions already. Small and mid size companies have less discretionary funds however, and you will have to prove your case.