NECA's David Silva sent over the details:
"It's that time of year again. We at the NECA studio invite you and all of the MOTU fan community to celebrate the 3rd annual 'Bring Your Man-E-Faces to Work' Day on September 3rd. It's already just a few days away! If you'd like to help us spread the word, here's the link to the official Facebook page. There is also a contest to win an exclusive Man-E-Faces Day t-shirt! Any support is much appreciated. Thanks!"
See what fans have to say on the Org forums.