I don't like some things in the idea, it changes significantly in price within a few days,
At times it could be positive, but there are times that these changes are not advantageous.
Yap, that can be a case in times, sometimes you might get an advantage if the price of bitcoin starts growing after you get your salary in bitcoins but it would be a loss for you if the price drops after getting the salary in bitcoins, in that case it is bad for the workers.
Well that risk will be always there while accepting salary in bitcoins and we may see price going down in coming years which can have negative effect on our monthly income.