Dear Jagannatha Rao,
For the purposes of Section 2-A, Chapters V-A and V-B, the IDA, 1947 takes into account only those employees who fall within the ambit of the definition of the term "workman" as defined under Section 2(s) of the Act.
Even if an engineer is predominantly employed to do technical work without anyone under him to exercise any supervisory control, he would be considered a "workman" under Section 2(s) of the Act, irrespective of his salary or designation.
Appointments with a termination clause specifying a certain minimum period of notice or notice salary in lieu thereof are common, particularly in respect of higher management cadre employees. However, as per the ratio decidendi of the Central Inland Water Transport Corporation v Brojonath Ganguly (1986 SCR(2) 278), such a termination clause was deemed unconscionable and opposed to public policy under Section 23 of the Indian Contract Act, 1872, and therefore held to be void or voidable. In that case, the Supreme Court directed payment of a higher compensation than the notice salary to a DGM (HR) who was terminated without reason under such a termination clause. If this practice continues unchecked, terminating the services of an unwanted employee would become an easy task for every employer. Therefore, it is important to note that such a termination clause, even if accepted earlier by the concerned employee, would not stand up to judicial scrutiny if challenged later.
Regarding your last query, the employee strength in an industrial establishment, as defined in the two chapters of the IDA, 1947, must be determined solely with reference to the number of employees classified as "workmen" on the rolls. Casual or contract laborers are not included for this purpose. Out of a total of 69 people in the establishment, only 29 are workmen, which falls below the threshold of 50, thereby exempting the establishment automatically. I accept your statistics as provided without any further questions.