This paper investigates different possible factors influencing the degree to which a company engages for sustainability. Based on existing literature, company-internal and -external influences are identified in a first step. In a second step, these factors are tested by combining empirical survey data of 468 companies with publicly available data. The test of ten linear and binary logistic regression models reveals that both, company-internal and -external factors, are able to influence corporate engagement for sustainability. Know-how about sustainability management is found to be among the strongest promoting drivers for corporate sustainability engagement in most models.