5. Every person making an election for benefit to be paid weekly under paragraph 2 shall furnish such certificates, documents and such other information of facts as the Secretary of State may, in his discretion, require, affecting his right to receive payment of benefit weekly and in particular shall notify the Secretary of State in writing of any change of circumstances which he might reasonably be expected to know might affect the right to receive payment of benefit weekly, as soon as reasonably practicable after the occurrence thereof.E+W+S