Deleting will permanently erase ALL related history for this employee including financial costs and messages.
CAUTION: If you just want to deactivate the employee (reversible) so they are removed as an active employee. If you need to retain costings for historical purposes set the employee to inactive instead. Deleting an employee CANNOT be reversed.
To 'Delete' an employee go to their employee profile (accessible via the employees page on the left side menu) and near the employee photo at the top you should find a button called 'options' (as shown below), click to reveal a drop down menu. On the drop down menu click delete. Follow the instructions to enter the employee name and confirm to 'Delete Employee' and the employee will be deleted(Shown below).