The official Twitter account for the Working!! series has announced that an additional episode of the third season, titled Working!!!: Lord of the Takanashi, will be broadcast as an hour special. A promotional video was released together with the announcement, which aired at the end of today's broadcast. More information will be announced later.
The original four-panel manga is written and illustrated by Karino Takatsu, and was serialized in seinen magazine Young Gangan in December 2004. The series ended in November 2014, with thirteen compiled volumes. In 2015, the manga received a six-chapter sequel.
In 2010, Working!! received a 13-episode TV anime adaptation by A-1 pictures, and it was then followed by a second season in 2011. The third season began airing in July 2015 and concluded this week with thirteen episodes.
NIS America released the first two seasons for North American release in 2010 and 2013, respectively.