Sample of resignation letter health reason?

Sample:

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(salutation)

My doctor has advised me that my health will no longer permit me to keep up a full-time job. It may be obvious that I haven't been well, as I have had to take a considerable amount of sick time. I had hoped that things would improve, but this is not the case. I can no longer keep up the standard of work that I prefer to do, and my energy level is so low that it is an effort to make it through the day. Therefore, I must resign, effective (date). I have attached a letter from my doctor, as I expect to be claiming disability benefits from the company plan. I take this step with the greatest regret, and extend sincere apologies for this unavoidable action.

Sincerely,

(name)

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Answer

Your resignation letter only needs to include the fact that you are resigning and the date of your last day. They do not need the health information at all; infact it does not properly belong in your file. The disability information is a separate, sealed file due to privacy laws and you want to keep them separate as you go through the process to receive disability. Also, should you later be able to return, you do not want this information in your personnel file.