First you must ensure there are set specific guidelines or expectations, also what the consequences are for not meeting or violating them. Accountable in a verbal first warning but written and placed in file if the same violation happens again for reference. Second offense a 1st formal written reprimand signed and placed on file. Third offense 2nd formal written reprimand with a notice of termination if it occurs again. Not all situations have to come to termination and circumstances involved should always be part of the process.