You can't get pregnant if you abstain from sex. About the only way to prove that the person was having sex outside of marriage would be to come in and say they were pregnant and request maternity leave. If there was a contractual obligation to abstain from sex while employed then she violated the contract and now she wants a payed vacation for violating the contract? Are you ****ing kidding me?Sorry, but that is the stupidest **** I've ever heard, and no one who believes in the rule of law can possibly take that seriously. If the courts actually took your claim seriously (which fortunately they don't...and haven't for nearly a century), then the employment contract guaranteeing maternity leave would mean literally nothing, as the employer will nearly ALWAYS be able to find SOME small violation of the rules in an employee's past to justify her termination.