It seems that people on other forums have been judging when the next set of Aniplex of Japan licenses will expire through Hulu expiration dates. If this method is correct, the next licenses that are expiring are the original Fullmetal Alchemist (7/31) and Birdy the Might Decode (10/14) from Funimation. In addition, Sound of the Sky from RightStuf (10/28) and Working! season 2 from NISA (12/31) may be on the chopping block. Black Butler season 1 may expire next year.
I actually thought Working! S2 was already out of print. I'm not interested in the series enough to buy it, but if you are, better sooner than later!