Belgium is generally an egalitarian society.
For example, women are not expected to change their name when they get married. Parents can decide together whether their children will be given the family name of their mother, mother and father, or of their father alone.
Women are able to have a child on their own. They do not need to be married in order to do so.
LGBTQ people are also legally entitled to have children. Either by adoption or by a surrogate mother in the case of gays and sperm donation in the case of lesbians.
Every individual is equal, as the constitution states.
Therefore, there are laws that regulate paternity and parentage in general https://www.rechtspraak.nl/Uw-Situatie/Vaderschap, laws on maternity and parental leave, and laws that prohibit sexual harassment. All is punishable.
There are websites in Dutch here : maternity and parental leave http://www.werk.belgie.be/detailA_Z.aspx?id=818& sexual harassment https://www.seksualiteit.be/misbruik/seksueel-grensoverschrijdend-gedrag-volgens-de-wet.