When converting your part-time employee to a full-time employee, you can send the Part-time to full-time offer letter template to your employee and hence let them know regarding their promotion. With the help of the below-provided template, it is possible to let them know more details regarding the same.
Dear [employee name],
We are excited to announce that we are offering to extend your employment status from part-timer to full-timer as of [date].
If you accept this offer, the following terms and conditions will be applied to your new employment contract:
To accept and sign this contract do send us back an email with your signature on the contract by [date].
Feel free to contact the HR department if you have any doubts regarding the process.