If you prefer to email your employees rather than face to face meetings, even though your office is within 10 feet of their desk.......you just might be a bad boss.
If at any time you say the word "cleavage" out loud to any employee, you're definitely a bad boss.
If you have an "open door" policy, but your office is usually empty, you're a bad boss.
If you copy and paste text from last year's performance appraisal into this year's, you're most assuredly a bad boss.
If you observe your employees sharing the phone number of a good employment attorney, you might be a bad boss.