i have a certification, i am responsible for ensuring i meet the renewal requirements, the bank pays for my continuing education hours and annual registration. no one has ever asked to see proof, but the certificate is in my office in a nice frame and shows i'm registered until 2021. i would also provide a copy showing registration if needed. it is included in my bio on our HR website, under the same section about education.
for those in the company that are required to maintain a license (attorney, CPA, notary, brokers, etc), they must furnish annual recert proof.
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