The only place where I've seen the certification as a requirement is govt jobs (and UfT I believe). Apart from those two, I've yet to find even a reference for

The only place where I've seen the certification as a requirement is govt jobs (and UfT I believe). Apart from those two, I've yet to find even a reference for it (let alone a requirement) - which is a cycle because one of the requirements of being a PEO is 12 months of work experience under a PEO (which won't happen as there aren't enough PEOs - the chicken and egg problem).