Global supply chains, often spreading across countries from developed and developing nations, are exposed to diverse socio-economic contexts. The increasing demand for a better control of social and environmental criteria in supply chains, as Sustainable Supply Chain Management (SSCM) argues for, further increases this complexity. This raises the question how SSCM is implemented in corporate practice. The presented survey-based study compares the implementation measures of the largest German stock companies (large caps) with the second largest ones (mid caps). The results show that large caps have progressed further in their implementation and that the processes are more formalized. Measures which are easier to implement, such as written requirements and standards, are more often applied than resource-intensive processes of evaluation and audits. At the same time, the increasing importance of supplier development becomes apparent.