Last Fall, the Business Department at Calvin College and the Acton Institute hosted the Symposium on Common Grace in Business, and the proceedings have just been published in the Journal of Markets and Morality: http://www.marketsandmorality.com/index.php/mandm/issue/view/37
Two of those articles may be particularly relevant:
This one is on pricing: http://www.marketsandmorality.com/index.php/mandm/article/view/1060
This one is on debt and risk: http://www.marketsandmorality.com/index.php/mandm/article/view/1058
For more reading on Christian business ethics, I would recommend the following. I use the first two in my classes at Calvin, and the first one is thoroughly Reformed. The second one delves into a number of specific business ethics problems, and the third one is a careful exegesis of the Gospel of Luke as it pertains to Jesus's teachings on the management of the household (which at the time was a center of economic production as well as consumption).
Van Duzer, J. 2010. Why business matters to God (and what still needs to be fixed). Downers Grove, IL: IVP Academic.
Hill, A. 2008. Just business: Christian ethics for the marketplace. Downers Grove, IL: IVP Academic.
Dyck, B. 2013. Management and the Gospel: Luke's radical message for the first and twenty-first centuries. New York: Palgrave Macmillan.
As for the "how" of taking action on ethical challenges in business, my article in the abovementioned issue of JM&M talks about that:
I also recommend the following book, which contains another framework that I use in my class at Calvin. It's written from a secular perspective, but it provides useful guidance for acting on one's convictions in a secular organization:
Gentile, M. C. 2010. Giving voice to values: How to speak your mind when you know what's right. New Haven, CT: Yale University Press.
Finally, for businesspeople who want to organize for change, I recommend a secular organization called Net Impact. https://netimpact.org/ For Christian businesspeople who want to connect with each other and learn how to live out their faith at work, I recommend the Center for Faith and Work at Redeemer Presbyterian Church in New York. http://www.faithandwork.com/ Both of the above have annual conferences, and both are holding theirs this year November 5-7, in Seattle and NYC, respectively.