Dear Mr./Ms. Bossname,
I am resigning, effective immediately.
As I have had repeated issues with full and prompt payment of my wages, benefits, and tips in the past, I have included timesheets and receipts that have been verified by a representative of the company. I expect my last paycheck, in full, including my unused PTO hours, sent to my residence no later than the end of this month.
My legal representative will be in touch next month regarding the backpay for which I am still due.