Legal analysis: it can be sent, but it is best to look at the company's requirements. Some companies require more than three grades. Third-level hospitals need to register in advance to see a doctor and issue sick leave. The general unit does not recognize the fake note opened by the community.

At the same time, the condition for issuing sick leave notes is: 1, and only clinicians with the title of doctor or above and the right to prescribe have the authority to issue sick leave notes (or illness introduction). 2. Doctors can only issue sick leave notices to patients who have been personally diagnosed and treated, and make records on medical records (including outpatient medical records) and outpatient registration forms for checking; Sick leave must be stamped by the medical department to be effective.

Legal basis: Article 23 of the Law of People's Republic of China (PRC) on Medical Practitioners, when implementing medical treatment, prevention and health care measures and signing relevant medical certificates, doctors must personally check and investigate, and fill in medical documents in time according to regulations, and may not conceal, forge or destroy medical documents and related materials.

Doctors shall not issue medical certificates that are irrelevant to their scope of practice or inconsistent with their categories of practice.