Legal analysis: unreasonable. 1. The unit shall not detain the citizen ID card. If it is found that the unit has illegally withheld the resident identity card, the employee can report it directly to the labor department or the police station. 2. It is clearly stipulated in the law that any unit has no right to withhold information such as resident ID card and education, so there is no case that the unit withheld information for 3 days. If the unit needs to record information, it shall make a copy on the spot and give the original to me.

Legal basis: People's Republic of China (PRC) Labor Contract Law.

Article 9 The employing unit shall not detain the employee's resident identity card and other documents, and shall not require the employee to provide guarantee or collect property from the employee in other names.

Article 84 If an employing unit violates the provisions of this Law and distrains the resident identity cards and other certificates of laborers, the labor administrative department shall order it to be returned to the laborers within a time limit and punish it in accordance with relevant laws and regulations. If an employing unit, in violation of the provisions of this Law, collects property from laborers by way of guarantee or other names, the labor administrative department shall order it to be returned to the laborers within a time limit and impose a fine of not less than 500 yuan but not more than 2,000 yuan per person; If it causes damage to workers, it shall be liable for compensation. If the employee dissolves or terminates the labor contract according to law, and the employer detains the employee's files or other articles, it shall be punished in accordance with the provisions of the preceding paragraph.