(a) When you must file your request. We will reconsider an initial determination if you file a written request within 60 days after the date you receive notice of the initial determination (or within the extended time period if we extend the time as provided in paragraph (c) of this section).
(c) When we will extend the time period to request a reconsideration. If you want a reconsideration of the initial determination but do not request one within 60 days after the date you receive notice of the initial determination, you may ask us for more time to request a reconsideration. You must make your request in writing and explain why it was not filed within the stated time period. If you show us that you had good cause for missing the deadline, we will extend the time period. To determine whether good cause exists, we use the standards explained in § 408.1011.