Certification is valid for three years. Maintaining your understanding of current PHA practices by attending training courses and facilitating PHAs are important aspects for a CPS^®. Therefore, recertification requirements for CPS^® are as follows:

• A report that contains the study worksheets from a substantial PHA study facilitated by the applicant within the last year must be submitted. The PHA procedure and any associated guidelines used also must be submitted to facilitate review of the work product.

• Successful completion within the last three years of applicable classroom training for a minimum of three days is required.

• Two professional references from supervisor / manager / peer who can attest to responsibility for work product and professional ethics. Additionally, references from individuals who were members of a team for a PHA study facilitated by the applicant within the last year who can rate leadership skills.