Won't fire the bad apples - Mechanical Engineer Toshiba Employee Review

Every workplace has bad apples. Toshiba seems to have very poor hiring practices which result in hiring a lot of people who have no idea what they are doing. In Toshiba, the practice is to keep moving them to other positions or giving 'promotions' rather than terminate them and hire someone better qualified. This leads to competent people being overworked and undervalued. Travel on the weekend is often required for my position, and the salary doesn't justify the high number of unpaid overtime hours.