Employee's resignation during pregnancy is voidable due to error, regardless of employer's fault or knowledge.

The Supreme Court dismissed the cassation appeal in a labor dispute where an employee resigned while unaware of her pregnancy. The lower court ordered reinstatement based on special protections for pregnant women, while the employer argued the resignation was a valid act of a paid legal transaction. The court ruled that although the general rule requires employer fault for voiding such acts, this requirement is waived for pregnant employees to ensure their continued protection.