劳资双方不缴纳社保的约定，无效！

Group 1 - The core viewpoint of the article emphasizes the invalidity of agreements between employers and employees to not pay social insurance, reinforcing that employees can terminate contracts and seek compensation if social insurance is not paid [3][4] - The new interpretation, effective from September 1, 2025, clarifies the legal consequences of such agreements and supports employees' rights to compensation [2][4] - The article highlights a case where an employee successfully claimed compensation after the employer failed to pay social insurance, illustrating the enforcement of this legal principle [3][4] Group 2 - The article discusses a case where an employee's refusal to sign a written labor contract does not obligate the employer to pay double wages, as the employee acted intentionally [5][6] - It clarifies that the employer is not liable for double wages if the employee deliberately avoids signing a contract, emphasizing the mutual nature of contract agreements [6] - The interpretation also specifies conditions under which employers must offer indefinite contracts after two fixed-term contracts, preventing evasion of legal obligations [6][8] Group 3 - The article addresses the responsibility of contractors in construction projects regarding work-related injuries, stating that contractors must pay for work injury insurance even if there is no direct employment relationship [9][10] - It emphasizes that the contractor's liability for work injury insurance is crucial for protecting workers' rights and ensuring timely compensation in case of accidents [10] - The interpretation aims to regulate subcontracting practices and uphold labor rights in the construction industry [10]