if he has no intentions of returning to Poland he could possible avoid this you think?
Not sure about that. Foreign judgements can be executed by Irish courts. In most cases they're not simply because the Polish bailiffs don't have the English language skills to deal with it but in theory he could end up being pursued through the Irish courts.
Also, he may not intend to return to live in Poland but presumably he will want to visit his homeland at some point and he could find himself under arrest if his ID is checked and he's found to have an outstanding debt. Btw when a father stops paying the mother can apply for a maintenance payment from the authorities. If she does that, then the father's debt is to them. He has to repay what they've paid the mother. It's not a good situation to put yourself in if you're Polish, owing money to the government in any form. The mother can complete paperwork to say what she wants done about the debt and can specify whether she simply wants the debt collected or if she wants the father to go to jail.
Finally, there is a chance that he may want to have contact with his child in the future and if he completely tries to avoid his financial responsibility he'll find it hard to build bridges with the kid later.
