Mulie -
For the most part, if you are willing to work, there is work to be had.
Whitehorse - being about 23000 people - is the government center. LOTS of gov't workers. Also, very very tough to find housing and when you do it's $$$. The old mentality of the territory saw restricted development, and the modern territory faces a LOT of NIMBYism.
There are some lot lotteries so that might be a way to get housing (but you still have to live somewhere in the interim).
Watson Lake, not much for work. Dawson, work in the summer, not much in the winter. Haines Junction/Mayo/ Faro all small but little work.
Again, if you are willing to work, it's there but you might have to look. Housing is the big issue, IMO.
I would go back but the winters are just too long. The short summer doesn't make up for the length of winter