A lack of health, dental, PTO, or other benefits is the cause of this employee resignation letter.
Dear Mr./Ms. Bossname
It is with great regret that I offer my letter of resignation from (company), effective (date).
I have always enjoyed my time and work spent at (company). During my (amount of time) as (position), I have greatly expanded my horizons concerning my career. However, at this time I must seek out a position where I can receive (benefits) from my employer. Otherwise, I am unable to continue meeting my living expenses.
Thank you for your understanding and consideration concerning this matter. I appreciate all of the opportunities this company has offered me.