You can lose weight if you are overweight. Firefighters are all labor contract workers, and they are protected by law. They will not be easily brushed off if they pass the exam, as long as they lose weight and reach the standard. The so-called labor contract refers to the agreement between the laborer and the employer to establish labor relations and clarify the rights and obligations of both parties. Its terms include the term of the labor contract, work content, labor protection and working conditions, labor remuneration, labor discipline, conditions for termination of the labor contract, liability for breach of the labor contract, etc. The conclusion and modification of labor contracts shall follow the principles of equality, voluntariness and unanimity through consultation, and shall not violate laws and regulations.

article 3 of the labor contract law of the people's Republic of China

when concluding a labor contract, the principles of legality, fairness, equality, voluntariness, consensus, honesty and credibility shall be followed. The labor contract concluded according to law is binding, and the employer and the employee shall perform the obligations stipulated in the labor contract.

article 1 to establish labor relations, a written labor contract shall be concluded. If a labor relationship has been established and a written labor contract has not been concluded at the same time, a written labor contract shall be concluded within one month from the date of employment. If the employer and the employee conclude a labor contract before employment, the labor relationship shall be established from the date of employment.

article 36 the employer and the employee may terminate the labor contract through consultation.