I've recently seen this in the "About" section of a Facebook profile.
It links to a "Work Status" page which looks official (but is it?).
Are there any other work statuses and are they listed anywhere? It would be nice to have a complete list.
A work status defines someone's job or occupation of the day if it doesn't involve a company.
It appears that they were widely used by the community under some "Interest" or "Community" pages and were finally merged and sorted by Facebook under a more descent category, "Work status".
I didn't find a complete list but stumbled upon some of them.
And their respective icons:
Feel free to complete the list.