Full-time doctoral students pay social security, which affects employment.

Legal analysis: If he is studying, it means that he is a student and can't sign a labor contract or get social insurance, otherwise he will get it for nothing. He can only sign labor service agreements, and income tax can only be paid according to labor services. There is no law. As for avoiding the risk of not getting social security, it is suggested to consider commercial insurance.

Legal basis: Article 17 of People's Republic of China (PRC) Labor Contract Law shall contain the following clauses:

(a) the name, domicile and legal representative or principal responsible person of the employing unit;

(2) The name and address of the laborer and the number of the resident identity card or other valid identity documents;

(3) The term of the labor contract;

(4) Work content and work place;

(five) working hours and rest and vacation;

(6) Labor remuneration;

(7) Social insurance;

(eight) labor protection, working conditions and occupational hazard protection;

(nine) other matters that should be included in the labor contract as stipulated by laws and regulations.