The superintendent of public schools in all cities having a population of more than one thousand inhabitants as determined by the most recent federal decennial census or the most recent revised certified count by the United States Bureau of the Census and the presiding officer of all other school boards shall furnish a duplicate copy of all certificates issued under sections 48-302 to 48-313 to the Department of Labor. The duplicate certificates in the form set forth in section 48-309 shall be filed with the Department of Labor at the time of the issuance of the original certificate.