Agreed. The company failed to perform any process of investigation and called up the employees whose involved in the incident. Only listen to one side and straight issue the warning letter. Now cause the employee had very bad emotional,mental and psychology wellbeing.

No, the company cannot issue the first and last warning letter without any process of investigation. Before taking any disciplinary action, it is important for the company to conduct a fair and thorough investigation to gather all the relevant facts and evidence regarding the employee misconduct. This investigation process typically includes interviewing the employee involved, gathering witness statements if applicable, reviewing any available documentation or surveillance footage, and considering any previous incidents or warnings. The purpose of this investigation is to ensure that the company has a complete and accurate understanding of the situation, allowing them to make an informed decision. By skipping this investigation process and immediately issuing a warning letter, the company risks violating the principles of natural justice and due process. It may also lead to unfair treatment of the employee and potential legal consequences. Therefore, it is essential for the company to follow proper investigative procedures before taking any disciplinary action.