I authorize my employer to deduct and remit to my local from my pay in each pay period a pro-rata portion of the annual dues, fees and assessments required for membership in my local, Education Minnesota, the National Education Association and American Federation of Teachers, the current rates for which are listed above. I fully understand that the annual dues required for membership in the four associations are subject to periodic change by the governing bodies of the associations and authorize my local to deduct any modified monthly dues, fees and assessments established by those governing bodies unless my obligation to do so ends under one of the circumstances set forth below. This authorization continues from year-to-year, regardless of my membership in the union, unless: (a) I revoke it by submitting written notice to the local union during the thirty-day period that begins on Sept. 1 and ends on Sept. 30, in which case my revocation will take effect on Oct. 1 in the year in which I submit the notice; or (b) my employment with my current employer ends. If any provision of this agreement is determined to be unlawful or invalid, the remaining provisions will remain in effect.