Baotou owes money, is the signature iou written by the worker valid?

As for IOUs, IOUs have legal effect as long as their contents comply with the law, the parties have corresponding capacity for civil conduct, and the parties issue IOUs according to law. The debtor shall bear the corresponding repayment responsibility according to the agreement of the IOU. For the specific situation, please ask relevant parties to verify and determine according to the actual situation and relevant laws and regulations.

Relevant laws and regulations: People's Republic of China (PRC) Contract Law.

Article 44 A legally established contract shall come into force upon its establishment.

Where laws and administrative regulations stipulate that examination and approval, registration and other procedures shall be handled, such provisions shall prevail.

Article 45 The parties may stipulate that the validity of a contract is subject to conditions. A contract with effective conditions shall take effect when the conditions are met. A contract with termination conditions is invalid when the conditions are met.

If the parties improperly prevent the achievement of conditions for their own interests, the conditions are deemed to have been achieved; Those who improperly contribute to conditional achievement are regarded as conditional failure.