The UGT union, which represents employees in sectors ranging from food processing to mining, said on its website that it opposes any move to shun Nestle products such as Nescafe and Viladrau bottled water.
Nestle is one of Catalonia’s biggest private employers, with four of its 10 Spanish production sites based in the region, as well as its country headquarters.
“We are calling for common sense and the end to any boycott or move that obstructs the normal sale of Nestle products,” the UGT said.
“Behind the brand, there are thousands of jobs that shouldn’t be put at risk and which support many families across all of Spain,” it said.
Calls to shun emblematic Catalan brands have often erupted elsewhere in Spain whenever separatist sentiment simmered up in the northeastern region.
They’ve spread anew via Twitter and Facebook amid ousted Catalan leader Carles Puigdemont’s attempt to secede. Typically Catalan products such as cava face the brunt of the boycotts, but this time Nestle has been drawn in.
The Swiss company employs more than 4,930 people in Spain, where it got more than €2bn of revenue in 2016, according to Nestle’s local website.
In addition to those direct jobs, Nestle helps give work to thousands of Spaniards indirectly through its purchases of goods and services, the UGT said.
Other multinationals that have faced calls for boycotts include Danone, which bottles Font Vella water near Girona.
The UGT has spoken up in defence of the French yoghurt maker as well, condemning the boycotts.
Meanwhile, Spain’s services industry’s took a hit last month during the crisis in Catalonia, dealing a blow to one of the eurozone’s best-performing economies.
IHS Markit’s monthly gauge fell the most in more than two years, dropping 2.1 points to 54.6, according to new data. While the gauge still signals growth, that’s the weakest reading since January and far below the median forecast of economists.