You drink coffee to kill time. Not leetcode.

I agree, doing Leetcode on work time isn't professional. 
  
 But even I was addicted to LC at some point of time and used to do it just to pass time outside of office. So I can understand what the person could've done Leetcode to pass time.

Software Developer

Software Engineer

You  got fired because they  had decided to fire you. Leetcode is just a reason they said. If you  were doing nothing, the  would have fired you  saying you  are doing nothing. 

Always be normal in office, watch youtube, facebook like everyone else to kill time.  IF nothing is available , then set up meetings.

Consultant

Program Manager

Govt should invoke the manager's driving license. Glad he didn't become a doctor.

This is like - I'll kill myself preemptively as someone else is planning to kill me.

Fired because manager thought they might leave