They will most likely make a determination of child support without him, and then they will have to locate him to enforce it.
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If he does not appear, an order directing him to pay child support could be entered in his absence. He has a continuing obligation to notify the court of his address. The mother of his child/ren can move to enforce the judgment through the Florida circuit courts of the Department of Revenue.
Legal disclaimer: The response given is not intended to create, nor does it create an ongoing duty to respond to questions. The response does not form an attorney-client relationship, nor is it intended to be anything other than the educated opinion of the author. It should not be relied upon as legal advice. The response given is based upon the limited facts provided by the person asking the question. To the extent additional or different facts exist, the response might possibly change. Attorney is licensed to practice law only in the State of Florida. Responses are based solely on Florida law unless stated otherwise