Sexual harassment policy has been around for a good 30 years or so and by now is pretty much boilerplate stuff. Every company has something, whether they have new employees sign a simple statement that they will not engage in sexual harassment, or whether there is a formal training program they have new employees read and sign as part of the new hire orientation.
There is a ton of stuff on the internet about the subject, for instance see NOLO:
http://www.nolo.com/legal-encyclopedia/preventing-sexual-harassment-workplace-29851.htmlFor my grant proposal, I borrowed heavily from
NOLO's "Avoid Employee Lawsuits: Commonsense tips for responsible management", mostly condensing the ideas that were applicable to online interactions. While the same ideas are common to most HR policies, this book presents them fairly succinctly, as you would want in a policy written to be understood by a wide variety of users.