Is it against labor law not to buy social security during the probationary period

According to the Labor Contract Law, companies should also pay social insurance premiums for employees during their trial period. The probationary period is part of the labor contract, and a labor relationship has been established between the employer and the employee. Therefore, the employer shall register the employee for social insurance within 30 days after he/she joins the company and pay the social insurance premiums in accordance with the law. If the enterprise fails to pay the social insurance premiums in full and on time, the social insurance premium collection agency has the right to order it to pay the premiums by a certain date or to make up the full amount. If an employee finds that an enterprise has not paid social insurance premiums for him/her, he/she can report and complain directly to the labor inspection or social security audit department. The relevant departments will deal with such illegal behavior in accordance with the law. According to the Labor Contract Law, an employee can terminate the labor contract unilaterally at any time without paying liquidated damages, and can ask the employer to pay the social insurance premiums. If the labor contract is terminated according to the provisions of Article 38 of the Labor Contract Law, the employer also needs to pay economic compensation to the workers.