Leaving due to illness
Your name/address/contact details
Re Intention to leave (insert date)
In accordance with the terms of my written contract, I hereby give you??.weeks/months notice of my intention to leave. My last day will be???..
As you are aware I have been unwell for sometime and due to the ongoing nature of my illness, I do not feel able to continue in my present role. I apologize for any disruption this will cause but assure you that I will assist with the transfer of duties and responsibilities before leaving.
I would like to thank you for the opportunity to be a part of your team and wish you and your colleagues all the very best for the future.