No, a master does not have the legal right to force a woman to have an abortion or not, and unfortunately, he can legally be forced to become a parent. As a general rule, the legal system does not let fathers simply give up their rights to avoid child support. If a master does not want children, he should take matters into his own hands and use a condom or get a vasectomy. Short of going to a gynecologist with a woman and/or feeding the oral contraceptive pills to her, there is no way to make sure one is actually using a form of birth control.