This research leads to investigate the response of French companies through their corporate sustainability policies as a result of the different types of pressure that stakeholders can bring. The influence of stakeholders is increasingly significant towards ethical and environmental issues. Stakeholders do not hesitate to set up actions to make themselves heard. Social and environmental concerns facing this polluting industry make food companies exposed to more and more pressures that they must manage. 

The academic literature necessary for the understanding of this study was carefully selected from online academic libraries. The literature review defined the objective of balancing Profit, People and Planet in corporate sustainability policies and its implementation through the Triple Bottom Line model. Also, the pressure groups are defined according to the academic literature and associated with Freeman's theory on stakeholders. This literature was coupled with collected primary data. Interviews were conducted with three French companies of different sizes to guarantee a realistic representation of the market. The interest of the inductive method used is to be able to apply the observations made on a larger scale.  

The results obtained are grouped under five themes to facilitate their identification: Quality, Ethics, Environment, Consumer's power, and Well-Being. Under each of these themes, one or more stakeholders exert pressures to achieve the same objective. The strategies adopted by companies vary according to the type of pressure they face. Each company adapts its corporate sustainability policies to the pressures according to its size. Large companies will be better resourced than small ones. All corporate actions have two objectives: the satisfaction of their stakeholders and the improvement of the company in terms of sustainability.  

This thesis contributes to the Stakeholder's theory and Triple Bottom Line model. The combination of these two theories is essential to explain the two converging phenomena of this thesis: pressures and sustainable responses.