Dad won't pay for prostitute's baby

A married Melbourne man who had sex with a prostitute has refused to pay child support payments after she had his baby.

The man, who cannot be named, claims the birth was a breach of the Trade Practices Act, the Herald Sun reports.

The man told Magistrate Grant Riethmuller he had engaged in a "consumer transaction" with the woman, which should preclude him from now having to pay child support.

He said it was implied in the "contract" that the woman should have been taking measures for birth control.

The woman's employer has not been made public.

The magistrate heard the man had been paying casual child support payments of $100 each week before he lost his $140,000-a-year job.

He allegedly cut the payments when he took another job with a significantly reduced salary and ran into money troubles.

Mr Riethmuller also heard the man had a child with his ill wife, the newspaper reported.

But the magistrate this week ruled the circumstances of conception had no bearing over the case and ordered the man to continue the $100-a-week payments.

Sex without a condom is illegal in licensed brothels.