According to the official Zynga forums, the three new ribbons are:
– Employee of the Month – Every job that you help a friend complete that results in a Gold medal counts toward this ribbon.
– Fabulous Foreman – Every job that you start that gets completed with a Gold medal counts toward this ribbon.
– Best of the Rest – Every job that you get the MVP award on counts toward this ribbon. You are the MVP on a job anytime you contribute the highest percentage of work toward completion.
Pretty cool, right? Now we’ll have to spend even more time playing FarmVille! Glad we’re having a few free days to complete all these jobs!