"It's just one day to create awareness and get people thinking about what they can do, and different ways to make a difference."
Participating businesses will be turning down their thermostats two degrees and asking their staff to wear sweaters to make up for it. According to WWF, if every Canadian lowered the heat by that amount this winter, it would reduce greenhouse gas emissions by four megatonnes.
"They may do this and say, 'Oh, that wasn't so bad. Two degree isn't a big deal; we could do this all the time!', but if you don't challenge them to it they might never try it," argues Hrab.
Local schools have also been challenged to hold "ugly sweater" competitions. Ugly sweater or not, NEAT wants you to share photos of you and your colleagues wearing sweaters on their Facebook page, to show how you are taking action against climate change.