In 2014 German regulators imposed fines amounting to around 280 million euros on the three major German sugar manufacturers, including Pfeifer & Langen, for concluding anticompetitive agreements on sales areas, quotas and prices. The infringements involved the sale of both industrial and consumer sugar. They took place over several years up to the Bundeskartellamt's search in 2009 and in some cases date back to the mid '90s.

As listed on the We Mean Business website, this company has committed to the following climate action initiatives: commit to set a near-term, science-based target; commit to set a net zero, science-based target.

This company is a member of the Sustainable Agriculture Initiative (SAI) Platform, the main food industry initiative supporting the development of sustainable agriculture worldwide. Created by Nestle, Unilever and Danone in 2002, the SAI Platform is a non-profit organization to facilitate sharing, at precompetitive level, of knowledge and initiatives to support the development and implementation of sustainable agriculture practices involving the different stakeholders of the food chain.