1: Spend Your Time on Your Phone
You could be checking tiny spreadsheets on your phone, but it's more likely that you're goofing off on the company's dime. Every time your boss sees you when you are hands-on your phone, He/She thinks you are not at work and spoiling the whole office.
2: Don't Respond on Time
A lot of communication these days is electronic, whether it's email, text message, or WhatsApp, conversations with your boss are not always face to face. This means you don't have to reply immediately as you would.
3: Treat Your Customer Poorly
While the customer is not always right, with no customers you have no job. The boss wants satisfied customers who come back repeatedly, so if you want to tick their off, make sure you offer lousy customer service.