work at the Rihand Nagar Project. Some were appointed as clerks, account clerks, store clerks, store cashiers, non-technical supervisors, site supervisors, etc. Initially these workmen were required to undertake training and were, therefore, treated as appointed on ad hoc basis. They were not appointed on regular basis. They were supposed to be given pay scale after successful completion of the training. They were placed in regular timescale. They were subject to be transferred to any other project of the Company in India. They were not required to undertake any other job or business without permission of the competent authority. After completion of project they were served with the notices of retrenchment in August/September 1993. They were rendered surplus and hence retrenchment benefit under Section 25-F(b) of the Act was offered and they were advised to collect their other dues, namely; provident fund, gratuity, leave salary, etc. in accordance with the rules of the Company in force at the time of the Project. These retrenchment notices were challenged by the writ petitioners by filing number of writ petitions under Article 226 of the Constitution of India, against the respondent Company. In those writ petitions among other arguments, which were sought to be raised like retrenchment is bad as they are recruiting fresh people and their retrenchments were illegal and also violative of Articles 14, 16 and 21 of the Constitution of India, an additional ground was taken that the respondents had illegally invoked the provisions of Chapter V-A of the Industrial Disputes Act, 1947 but in fact Chapter V-B of the said Act applies as more than hundred workmen were being employed by the respondent Company and therefore, retrenchment of the petitioners was required to be complied with the provisions of Section 25-N of the Act, which were not followed and termination is illegal and void on that ground.