( 1 ) THE management of the Bharath Heavy Electricals Limited (B. H. E. L.) being aggrieved by the order of the learned Single Judge dated 27th September, 1999 in Writ Petition No. 23781 of 1991 has preferred this appeal. The above writ petition was filed by the B. H. E. L. Supervisory Staff Association, represented by its General Secretary. The above writ petition was filed by the first respondent herein for a mandamus directing the management of B. H. E. L. to keep the difference of Rs. 228. 40 at AICPI No. 685 point for the Executives and to revise the h. R. A. and C. C. A. with effect from 1-1-1987 to 19-6-1991 and to give fitment benefits proportionately as stated in the Bureau of Public enterprises (B. P. E.) circular dated 4-4-1990.

( 2 ) THE background facts of the case, in brief, be noted as follows.- the appellant is one of the public sector undertakings having several divisions all over the country. The employees of the appellant are broadly classified into three categories viz. , Executives, Supervisors and workmen. In most of the public sector undertakings there are only two categories of employees viz. , Executives and Workmen. The wage revision of wor