The company will lay off employees without giving a written notice.

According to Article 9 of the Measures for Economic Compensation for Violation and Termination of Labor Contracts issued by the Ministry of Labor, if the employer is on the verge of bankruptcy for legal rectification or has serious difficulties in production and operation, and it is necessary to lay off employees, the employer shall pay economic compensation according to the number of years the laid-off employees have worked in the unit. The company must pay the corresponding economic compensation for each full year of working in this unit. Therefore, it is illegal for the company to refuse to send you a written notice in order to avoid compensation for you, which infringes on your legitimate rights and interests.

But I don't understand what your employment status is now, since the unit won't give you a layoff certificate. How can you prove that you have been laid off by the company without a written notice and a labor termination report? If the company does not provide you with a written certificate of resignation, then there is reason to think that you are still an employee of the company and have the right to ask the company to provide you with a job and pay you the corresponding salary. If it continues to be rejected, it may submit an arbitration application to the Labor Dispute Arbitration Committee of the company's domicile for adjudication:

1, terminate the labor contract with the company;

2. Pay the economic compensation for the termination of the labor contract (pay one month's average salary for one year of work, and pay one year for less than one year);