If your expertise is not in labor law, you should discuss openly with regret that you only possess expertise in …., this is a question related to labor law, and, regarding the legality and risk of compensation, it cannot be answered. The issue needs to be consulted with specialized law firms as it is a sensitive matter.
The general understanding is that, for reference only, the sending of a prior notice falls under the provision detailing the time period for prior notice. As for whether the company is violating the law when unilaterally terminating the labor contract, it is another matter that requires the expertise of a specialized law firm to examine and provide answers. This can become a substantial risk for the business if the business is later sued by the employee.
Some businesses disclosed that they had opted to negotiate and bilaterally sign a contract termination agreement to avoid uncontrollable risks later.