If you wish to appeal, you must make your request in writing within 60 days from the date you received the hearing decision or dismissal. Social Security assumes you received the decision or dismissal five days after the date on it, unless you can show you received it later. If you have a good reason for requesting review after the 60th day has passed, you must explain that in your request. Contact your local social security hearing office, or call the Social Security Administration’s toll-free number if you need help (1-800-772-1213).