THey have a careers subpage. I would be willing to bet its got a form or two, and that's *very* personal info. I would also be willing to bet there's internal pages hosted on that website with logins.
Besides that, HTTPS would protect what pages you're visiting (even if plaintext knowing you're going to pages on, say worker's comp benefits is private information) allowing packet sniffers to only know what server you're hitting and not the exact page.
Remember- its not always what's on the page, its the fact you went to a specific page too.
There is absolutely no reason to use HTTP for anything. Encrypting the connection costs very little, prevents you from having stupid mistakes by not encrypting things that need to be, and provides enhanced privacy to things you may not realize that person is sensitive on. There's no reason NOT to make HTTPS everywhere.