How to write a resignation letter that's effective immediately? If the employer determines that the evidence is not satisfactory, the employer shall notify the employee immediately that the termination will remain in effect.Please accept this letter as my notice of resignation from my position as Piano Instructor at Brookside Music Academy, effective immediately. This Easy Form helps you resign as an agent for power of attorney. It works for property or health care powers of attorney. Every resigning employee shall be urged to indicate in the Resignation form the reason for leaving. I gave a letter of resignation to my boss and said "Sorry about this". This supports what the website of the Illinois law firm is saying. Please accept this letter as my formal resignation. Today will be my last day of work.