This is the formula at PSA as well. Curse of the wholly owned subs. If they could afford to do annual furloughs they would. Could be fun actually. I once had a job that laid me off every Jan - March because I was "seasonal full time" they would file the needed paper work for unemployment benefits.. automatically. Jan-March I still had 2/3rds my normal income direct deposited to the bank. 3 month paid vacations are pretty fun. Spent many a winter waist deep in BC powder. Snow that is.
If seasonal resorts can exploit this why can't airlines?