Can a public employee under Ohio public employees retirement system retire two times?

Absolutely, it is commonly done. One example is that the head of the Canton Health Department retired about two years ago, waited 30 days and was then hired back to the same job. He worked two more years collecting his retirement pay and also full pay as the department head. Most of the people working for him did not know and still don't. Do they keep this quiet because they themselves question the appropriateness? Some people call this double dipping. Usually only the higher echelons practice this, school administrators, judges, department heads, police captains, sheriffs. It is completely legal, although some people question the morality. They say the person is depriving someone of moving up into that position or being hired to fill it.