Members of the T&G union struck at the Nylatex textile factory in Long Eaton, Derbyshire, last week.
Dozens of workers downed tools because they have not had a pay rise for four years.
Three of the workers, with 100 years of service between them, staged a protest at the gates of the factory.
“It will be five years come April since we last had a pay rise,” said shop steward John Caple, who takes home £212 a week from his job as a loader.
“They’re trying to drive us down to minimum wages, even though we aren’t much above that now.”
He has worked for the company, which makes material for underwear and sportswear, including the England Euro 2004 football shirts, for 29 years.
The T&G has called an overtime ban and could call further strikes.