The principle of labor law to protect the legitimate rights and interests of workers mainly includes the following aspects: 1. The principle of equal employment: that is, when employing employees, the employer shall not discriminate on the grounds of race, sex, age, nationality, etc., and shall employ employees in accordance with the principles of justice, fairness and openness. 2. Labor contract principle: The employer and the employee must sign a written labor contract, clearly stipulating the rights and interests such as labor remuneration, working hours, vacation, insurance and welfare. 3. Principle of reasonable working hours: The employing unit shall reasonably arrange the working hours and rest time of workers, and shall not exceed the legal working hours and overtime hours. 4. Principle of ensuring labor safety and hygiene: The employer shall provide employees with a safe and hygienic working environment and working equipment, and conduct safety training for employees to ensure their life and health. 5. Labor remuneration principle: The employing unit shall pay the wages and benefits due to the employees according to law, and shall not default on the wages, and shall not deduct the wages of the employees in any form. 6. Principle of safeguarding the legitimate rights and interests of workers: The employer shall respect the personal rights, property rights and intellectual property rights of workers, and shall not illegally infringe upon the rights and interests of workers, and shall promptly handle complaints and opinions of workers.