We develop a model in which social pressure on a firm to behave well is jointly produced by a state regulator (EPA) and an NGO. The EPA and NGO differ in how they trade-off business versus environmental interests and also have access to different instruments in pursuit of their objectives. In particular, while the EPA will typically have the tools for detecting misbehaviour, the NGO can influence the intensity of social hostility directed towards those found to have misbehaved. EPA and NGO efforts may be strategic complements or substitutes, depending upon circumstances. We present a taxonomy of outcomes in the game between EPA and NGO in the spirit of Fudenberg and Tiroles’s (Am Econ Rev Pap Proc 74(2):361–366, 1984) classic taxonomy of business strategies. We also consider strategic delegation from NGO supporters to an NGO that has tastes over environmental and business interests different to their own.