If you are looking at a form based on your emplyees table and the phone
number is in this table you can add this field to you form.
or
If you use a combo to look up employees from the table you can add the
telephone number to the combo. Add an unbound text box to your form and use
this is the source
=[combo box name].column(2)
I assume you have ID, name, telephone number in the combo
so the column would be 2 as it starts from 0