Whether you can refuse to sign a contract with a new unit after the contract expires depends on the specific situation and legal provisions. Generally speaking, after the contract expires, both parties are free to decide whether to continue cooperation. If one party wishes to terminate the contract, the other party usually has no right to force it to continue cooperation.

However, in some cases, there may be specific legal provisions or contract terms that restrict this freedom. For example, the laws and regulations of some industries or regions may require employees to sign a contract with a new unit after the contract expires. In addition, if the contract contains non-competition clauses or confidentiality agreements, it may take a certain transition period to sign the contract with the new unit after the contract expires.

Therefore, when deciding whether to refuse to sign a contract with a new company, I suggest you read the terms and regulations of the original contract carefully first to understand your rights and obligations. In case of doubt or uncertainty, it is recommended to consult a professional lawyer or legal adviser.

To sum up:

After the contract expires, you can generally refuse to sign a contract with a new unit. But the specific decision needs to be based on specific circumstances and legal provisions. Before making a decision, it is recommended to read the terms and regulations of the original contract carefully and consult a professional lawyer or legal adviser.

Legal basis:

People's Republic of China (PRC) Contract Law and other relevant laws and regulations have clear provisions and standards on the signing, performance and dissolution of contracts. These laws and regulations clarify the rights and obligations of the parties and provide a legal basis for resolving contract disputes. Therefore, when deciding whether to refuse to sign a contract with a new unit, it is necessary to follow the provisions and standards of relevant laws and regulations.