Merck on Wednesday said a section of the workforce at its Goa plant has stopped work and the management and the workers’ union are in talks over their demands, including wage revision. In an exchange filing, the company said the management is trying to convince workers’ union to resume work and negotiations. Merck, however, does not foresee material impact on sales or availability of products. Shares of Merck edged down 0.24 per cent at ₹983.55 on the NSE.