5 On the other hand, Shri Singhvi, learned counsel appearing on behalf of the Petitioner-Union has submitted that said remedy is not an alternate efficacious remedy and, therefore, the petitioner is entitled to approach this court under its writ jurisdiction under Article 226 of the Constitution of India. He further submitted that a duty is cast on the employer on the schedule line under Regulation 12 of the Employees' State Insurance (General) Regulations, 1950. A duty is cast on the employer to ensure that an employee, before he is employed in the establishment, is registered under the ESI Scheme. He submitted that the duty is cast on the employer to enter the particulars in the declaration form including the temporary identification certificate and obtain the signature or the thumb impression of such person and also complete the form, as indicated thereafter. He also invited our attention to Regulation 15 of the said Regulations. Said Rule / Regulation lays down that appropriate office has to allot insurance number to each person in respect of whom that the declaration form has been received. He submitted that therefore, both Air India and Respondent No.3 are responsible for nonregistration of these workmen who are working since 1986. He further submitted that in the affidavit-in-reply it is admitted that
