1. Complete this fillable PDF form: a. ONCE YOU HAVE RECEIVED A CYBER PROPONENT PRE-DETERMINATION LETTER, YOU MUST SUBMIT AN ADDITIONAL REQUEST AND UPLOAD THE LETTER TO THIS WEBSITE.It says I need a proof of employment letter. For the military people did you just print out your proof of service letter? It effects a change in status from civilian to military member of the Armed Forces. Your Leave and Earning Statement (available via myPay) provides details on your pay grade, pay and entitlements, and deductions. The letter of offer is a formal acceptance of the job, but if you don't agree with the contract, you don't have to sign it. Applicants who are currently in the military must provide a letter from their Commanding Officer stating the expected discharge status and date. Write Letters: Get creative! It says I need a proof of employment letter.