I have just answered a similar question concerning ethics and here is the answer and the reference that I would like to share with you:

May (2013) demonstrates that challenges exist in organizational communication in ethical decision-making and practice. May deduces that organizational ethics are merely governing the actions of individuals - “organizations do not make decisions, per se, people do” (p. 11). Furthermore, May illustrates that there are challenging ethical questions at the personal, organizational, and societal levels. 

Here is the reference of May's book, which should be interesting to your question:

May, S. (2013). Introduction: Ethical perspective and practices. In Case studies organizational studies: Ethical perspectives and practices (pp. 1-33). Thousand Oaks, CA, USA: Sage Publication Inc.

Can we manage employee's ethics?. Available from: https://www.researchgate.net/post/Can_we_manage_employees_ethics [accessed Aug 16, 2017].

I believe it may depend on the nature of the business/organization etc.  Please let me know if the following references/sites are useful to you:

1.  The Ethics of Pharmaceutical Industry Influence in Medicine

http://www.unesco-chair-bioethics.org/wp-content/uploads/2015/09/The-Ethics-of-Pharmaceutical-Industry-Influence-in-Medicine.pdf4.

The Ethics of Pharmaceutical Industry Influence in Medicine. 7. Pharmaceutical access to physician prescription records. (drug data; marketing techniques; ...

2.  Ethical Criteria for Medicinal Drug Promotion - World Health ...

http://apps.who.int/medicinedocs/documents/whozip08e/whozip08e.pdfEthical criteria f6r medicinal drug promoW~ ... ethical criteria for drug promotion based on the updat- ... industry (advertising agencies, market research organi-.

3.  Ethical pharmaceutical promotion and communications worldwide ...

https://link.springer.com/article/10.1186/1747-5341-9-7Download PDF · Philosophy,

4.  Ethics, and Humanities in Medicine ... largely built upon long-established rules relating to the quality of advertising material, have ...

Pharmaceutical marketing: ethical and responsible conduct - EY

http://www.ey.com/Publication/vwLUAssets/Pharmareport/$FILE/Pharmareport.pdfSep 1, 2011 ... pharmaceutical marketing practices (UCPMP) for the Indian pharmaceutical industry in June .... 3 www.pharmaceuticals.gov.in/uniformcode.pdf ...

Dennis

Dennis Mazur

I think that they follow their ethics, but their ethics may not be admirable by others.

To be socially responsible is when the organization is concerned about people, society and environment with whom and where it conducts business. In it’s most basic form, socially responsible marketing is taking moral actions that encourage a positive impact on all the company’s stakeholders, including employees, community, consumers, and shareholders. The main responsibility of marketers in this aspect is to package and communicate the organization’s decisions that will impact the various communities with which they interact. Consumers have the right and power to decide which companies succeed or fail; so marketers have a major responsibility to ensure their practices are seen as philanthropic without being phony.

https://www.youtube.com/watch?v=cX5Wz9fElJk

Recommended dear Dr.Dennis Mazur thank you so much for sharing these links,

Regards, Emad

Ethics in business, marketing is above all, it's the right way to succeed in life

In my experience, many companies proclaim to the public a set of ethics to which they rarely subscribe in marketing. Such companies pretend that they care about moral right and wrong, while in reality they care about legal right and wrong--specifically what they can legally get away with saying.

Dear Ms. Chandwani, you have choosen an interesting topic. I previously worked on a paper: "Do online travel agents deceive customers?" 

I thought this backround information about truth & deception might save you some time: 

https://www.researchgate.net/publication/319508818_Truth_Deception_-_What_is_right_or_wrong

Working Paper Truth & Deception - What is right or wrong?