The FCC recently changed rules around advertising on social media, known as truth in advertising. I.E. if a celebrity endorses a product, it must be known that the endorsement is a paid-for advertisement.
WF is being insane by thinking that its staff needs to do the same thing. If you read the rules very carefully, it only applies if person paid by a company is endorsing something on social media, i.e. providing transparency for followers. So unless you're posting #Ilove365foods, it should not apply to you, and it's pathetic of WF for trying to make you think otherwise. It's ridiculous that it's trying to exert that level of control over its entire staff when really the rules would only apply to a small number of global/regional or marketing personnel using their own social media accounts to drive product sales.
Here's an article that is more articulate than me: http://www.cyberalert.com/blog/index.php/updated-fcc-guidance-puts-social-media-marketers-on-notice/