German union IG Metall called on Saturday for steel workers to hold further warning strikes after employers failed to meet its wage increase demands in a third round of talks.
The action is set to begin on Monday, a day before talks are due to resume. Similar strikes took place earlier this month.
IG Metall, which is demanding an 8.2% pay rise for workers, on Friday rejected an offer by employers for a 4.7% increase for 21 months.
