A Diplomate has failed to maintain their certification when any of the following conditions occur:

• The CM process is not completed because:
  • A worksheet is not approved during the allowed review periods, or
  • The examination is not passed in the allowed time periods, or
  • A CM worksheet audit is failed
• Annual fees (renewal & late) have not been paid for 2 years
• An ethics review results in a decertification decision. ABIH may revoke a person’s certification at any time for cause related to an ethics sanction.

When a Diplomate fails to maintain their certification, ABIH sends a written notice of expiration to the person’s current postal mailing address.  ABIH publishes the names of persons whose certification has expired or has been revoked.

Decertification decisions can be appealed following the Certification Appeals Procedure.

Except for an ethics-related decertification, a person formerly certified may pursue reactivation.

It is considered unethical conduct for a person to advertise himself/herself as an ABIH Diplomate, CIH, CAIH, Certified Industrial Hygienist, Certified Associate Industrial Hygienist if the person:

• is not currently certified by ABIH
• has allowed their certification to expire
• has voluntarily surrendered their certification
• has been de-certified for cause

ABIH reserves the right and does take legal action when a non-certified person is found to be advertising himself/herself as an ABIH Diplomate.