The appellant-company conducts factories at Mulund in Greater Bombay, Kymore, Calcutta and Podanur. The present dispute relates to the factory at Mulund where the company em- F ploys more than 1700 workmen and has its Head Office also. On September 21, 1962 the 4th respondent union on behalf of the workmen of the Mulund factory submitted a charter of demands consisting of 20 items including the demand for increased dearness allowance. By an agreement dated November 26, 1964 b~tween the appellant-company and the 4th respondent union made G under s. l 0-A of the Industrial Disputes Act, 1947, the said demands were referred for adjudication to a board of arbitrators consisting of respondents 1 to 3. A notification dated December 5, 1964 referring the said disputes to respondents .1 to 3 was issued by the Maharashtra Government and published in the Government Gazette. Demand No. 1-A in the said charter of demands related to dearness allowance to be paid to both monthly H and daily rated workmen at the rates threin sef out. The arbitrators decided to hear and dispose of, first, the dispute as to dearness 'allow:mce and then to deal with the rest · of the