By this time next week, you could be rid of your problem employee.
Includes a letter of termination template.

Blog of a Sample Letter of Termination

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Terminate Employees with Care to Avoid Business Troubles
Sample Employee Discipline Letter
The Right Way To Fire an Employee
Terminating An Employee For The Best
Protect Your Company from Termination Lawsuits: Use A Written Reprimand
An Example of a Sample Letter of Termination