The men and women responsible for producing much of West Germany's money walked out on strike on Wednesday over pay and work hours, a union spokesman said.
Employees at the Bundesdruckerei--the state-run printing concern that produces banknotes, passports and identity cards--began an indefinite strike to press demands for a 5% raise and a cut in hours.
The West German central bank, the Bundesbank, said citizens need not fear a shortage of money.
"We also print banknotes at a number of other private printers, and in any case we have an ample stockpile," a spokesman said.
A spokesman for the strikers' trade union said the strike was "100% solid." The Bundesdruckerei employs about 3,700 people at three plants.