Non-compete agreement termination requires written form; employer cannot unilaterally void it based on changed risk assessment.

The Supreme Court quashed the lower court's judgment regarding the termination of a non-compete agreement due to procedural and substantive errors. The employer argued the agreement ended because the employee's potential harm ceased, but the court held that such a change in risk does not equate to the cessation of the agreement's legal basis under Article 1012 of the Civil Code. Furthermore, the court found the employer's unilateral termination claim invalid because it lacked the mandatory written form required by Article 1013 of the Civil Code.