Whirlpool doesn't manufacture microwaves. They are manufactured for them by Sharp so while I have no doubt that Whirlpool will up their prices I don't think they'll go that far.
It doesn't matter who makes them, Whirlpool profits from them. Whirlpool (or any company for that matter) can't just arbitrarily raise prices and sit back and make more money. There is no such thing as cost push inflation. Whirlpool can only charge what the market will bear. If it is paying its workers too much it will have to lay them off, lower their wages, or go out of business - or - move to a lower wage country.