Reimbursement allowed up to the per diem rate for that area. The meal allowance breakdown can be found on OSC's website.Fill out the order form with all the required fields. After the submission of your request, you may forward documents via email. You need to fill out a form to be considered for "Poor Person Relief. In completing this form employees will be acknowledging in writing that their second job is subordinate to their employment with Nassau County. Calculate your per diem allowance for your trip. Simply enter your travel dates and details to find out your per diem allowance. By including a per diem amount in the letter, the parties will not have to execute another payoff letter if the termination date. Payoff Request Form.