As long as the signed contract does not violate the law, it is valid. On the premise that the contract is valid, if there is evidence that the legal representative signed it to perform his duties, then the act of signing the contract is the act of the company, and the contract is a contract between an individual and his company. If there is no evidence to prove that the legal representative's behavior when signing represents his company and his behavior is to perform his duties, then the contract has legal effect between individuals.

Legal analysis

Whether a contract signed without official seal has legal effect depends on the specific situation: 1. If the contract is signed by the entrusted agent of the unit within the scope of its authorization or the legal representative of the unit, the contract is valid. 2. If the signed entrusted agent has no power of attorney, exceeds the power of attorney or signs a contract after the power of attorney is terminated, the signed contract is valid after ratification by the principal. Without ratification, the contract is invalid and the actor shall bear civil liability. Knowing that someone else has committed a civil act in my name without denying it, it shall be deemed as consent, and the parties have the corresponding ability to conclude a contract. The so-called ability of the counterpart to conclude a contract refers to the subject qualification of the contract subject to conclude a contract independently and undertake the contractual obligations independently. A contract is an act that the parties consciously pursue specific legal consequences for the purpose of establishing, changing and terminating civil rights and obligations, which is directly related to the interests of the parties. Do not violate the law and social public interests. Legitimacy is the essential attribute of civil juristic act, and it is also a necessary condition for the validity of civil juristic act. The legal effect of a contract lies in the fact that the parties' expression of will conforms to the law. Obviously, an illegal contract cannot be protected by law, nor can it produce the legal effect expected by the parties.

legal ground

Article 490 of the Civil Code of People's Republic of China (PRC): If the parties conclude a contract in the form of a contract, the contract is concluded when the parties sign, seal or fingerprint it. Before signing, sealing or fingerprinting, one party has fulfilled its main obligations, and the contract is established when the other party accepts it. A contract shall be concluded in written form as stipulated by laws, administrative regulations or agreed by the parties. If the parties do not do this in writing, but one party has fulfilled its main obligations and the other party accepts it, the contract is established.