Favoritism, must kiss a** to management regardless of work performance and ethic. Firing people without a chance of warning. Have seen people getting fired for small reasons, without hearing any reasons. Union will not be able to protect you if the employee's still on their 90 day probation.
Suggestions to new comers: Just do your job properly and don't call in as much regardless of the reason within your probationary period.
You'd see your new coworkers calling in regardless and still get put on to work cause of favoritism and letting them be, but don't let that get to you.