About 24 representatives of trade and industry bodies met Rai and demanded reconsideration of the plan.
Last week, the minister had said a 13-member advisory committee, which was constituted by the Labour Department in April to revise minimum wages, will submit its report in the next few days.
Subsequently the decision on fixing minimum wages for all working class - unskilled, semi-skilled and skilled - will be taken, he had said.
He said increase in minimum wages will hit small manufacturers who would be "forced to relocate".
The last revision of minimum wages in the city was done in 1994.
However, the Labour Department has been notifying increase in Dearness Allowance (DA) twice a year - April and October - which is based on All India Consumer Price Index No (CPIN).
