VW officials told Automobilwoche the company will in future be obliged to hold annual consultations with employees to examine capacity use at individual plants.
Until now, such meetings between brand director, works council and plant management only took place on a voluntary basis.
A confidential attachment to VW's new collective agreement with the IG Metall metalworkers union says that at the company's Salzgitter plant it is necessary to "install a design engineering and manufacturing competence for engine plastic components."
"A simple employment guarantee without specific production promises would not have been of much benefit to us," said Bernd Osterloh, the deputy head of VW's works council.
"VW still needs to improve many work processes," said IG Metall official Hartmut Meine.