Dear [Recepient first name],
Probation Review Outcome
Further to your recent review, this is confirmation that the decision has been made to terminate your employment with effect from [date].
The reasons for this decision are as follows:
I am therefore writing to you to confirm that your last day of service with the Company will be [date].
[Please let me thank you for all of your efforts during the past 3 months.]
Yours [faithfully | sincerely],
[Sender job title]