Though there is a difference of opinion about the status of teachers and whether they come under the scope of workmen under the Industrial Disputes Act, 1947, they will come under some of the labor laws. As such, they are workmen under the ESI Act, EPF & MP Act, and Payment of Gratuity Act.
Teachers and the Industrial Disputes Act
Under the present working conditions in various private schools and colleges, I don't think that they should be excluded from the scope of the Industrial Disputes Act. This is because a school or college is also an industry coming under the ID Act. Section 2 (j) of the ID Act defines ‘industry’ as “any business, trade, undertaking, manufacture, or calling of employers and includes any calling, service, employment, handicraft or industrial occupation or avocation of workmen.”
Supreme Court's Interpretation of 'Industry'
The Supreme Court has expanded the meaning of the term industry in the famous Bangalore Water Supply case, and the court has overturned many previous decisions. The court has held that any activity would be an industry if it met the ‘triple test,’ i.e.,
1. There is a systematic and organized activity.
2. There is collaboration between employers and employees.
3. It is for the purpose of production and distribution of goods and services, whether capital is invested in this activity or not.
In schools or colleges also, there is a service, and as such, there is no meaning in letting the teachers out of the scope of the ID Act. Interestingly, the administrative staff, the clerical, engineering, housekeeping, etc., are workmen, and they have separate minimum wages fixed. In many places, the said minimum wages would be higher than the salary paid to the teachers who are "doing a NOBLE profession" that they do not come under the purview of workmen!