If the allergy is caused by work, it is necessary to determine whether the allergen exists in the work environment. If it exists in the working environment, it can be identified as work-related injury.
According to the Regulations on Industrial Injury Insurance
Article 14 Any of the following circumstances of an employee shall be recognized as work-related injury:
（1） Injuries caused by accidents during working hours and in the workplace;
（2） Those who are injured by accidents while engaged in preparatory or finishing work related to work in the workplace before and after working hours;
（3） Accidental injuries such as violence during working hours and in the workplace due to the performance of work duties;
（4） Suffering from occupational diseases;
（5） Injured due to work or missing due to accident during the period of going out for work;
（6） On the way to and from work, he is injured by a traffic accident for which he is not primarily responsible or an urban rail transit, passenger ferry or train accident;
（7） Other circumstances that shall be recognized as work-related injuries according to laws and administrative regulations.
Legal basis
Article 14 of the Regulations on Industrial Injury Insurance shall be deemed as industrial injury if an employee has any of the following circumstances:
（1） Injuries caused by accidents during working hours and in the workplace;
（2） Those who are injured by accidents while engaged in preparatory or finishing work related to work in the workplace before and after working hours;
（3） Accidental injuries such as violence during working hours and in the workplace due to the performance of work duties;
（4） Suffering from occupational diseases;
（5） Injured due to work or missing due to accident during the period of going out for work;
（6） On the way to and from work, he is injured by a traffic accident for which he is not primarily responsible or an urban rail transit, passenger ferry or train accident;
（7） Other circumstances that shall be recognized as work-related injuries according to laws and administrative regulations.
