The importance of ethics is growing in the professional world. However, there are several ways of understanding it. Perhaps an interesting approach would be to see how it is approached in daily professional life.
In my active time as a professor of a humanities faculty I quickly learned that there were always arguments among honourable colleagues (ordinary professors) about influence, research funds, personnel positions. The ethics of the wise probably say: "Stay away from it". Daily morality says: If you don't want to be the big loser, you have to assert yourself - you have to join in and - if possible - look for ways to avoid the greatest banging and stinging. Once I happened to witness a conversation between colleagues from the Faculty of Natural Sciences. It was just the same, if not more: this competition to be the "best". It's a pretty ambivalent way, but I don't know if it's the same everywhere today.
In my active time as a professor of a humanities faculty I quickly learned that there were always arguments among honourable colleagues (ordinary professors) about influence, research funds, personnel positions. The ethics of the wise probably say: "Stay away from it". Daily morality says: If you don't want to be the big loser, you have to assert yourself - you have to join in and - if possible - look for ways to avoid the greatest banging and stinging. Once I happened to witness a conversation between colleagues from the Faculty of Natural Sciences. It was just the same, if not more: this competition to be the "best". It's a pretty ambivalent way, but I don't know if it's the same everywhere today.
Some people consider ethics of a professional organization different from their own personal ethics. They follow the organization's code of ethics so that they don't get into trouble, however, are not that careful when it comes to personal matters. For example there was an addictions counselor who would follow the code of ethics at work, however, hire one of his present or past clients to help mow his lawn at home (for pay, of course). Others confuse ethics and legality. This is how politicians walk the line. While some of what they do is not illegal per se, ethical questions abound especially when it comes to the business of fund raising for elections. Ideally a truly ethical person should practice ethical principles both at work and in their personal life. This way their behavior is always congruent with their values. Most people make exceptions though.
You asked: What is ethics from the point of view of everyday professional life? And you got an answer to the question based on my professional experience. In the tradition of Western philosophy, a distinction is usually made between ethics and morality: ethics is moral doctrine, morality the yardstick of good and evil in which human actions move. But of course you can also define it differently - just with this special background you mentioned in your answer - it only has to be said beforehand, if you ask the question how the term "ethics" should be defined.
Ethics is personal and based on your inner conscience, which could be regarded as an inner woman (see Jung). Morality is how we get on with each other and usually determined by the strongest. Interestingly, when alone, there is no need for morality.
In my opinion, ethics, in my medical professional life, is the observance and obedience on the principles and commands of Hippocrates - Hippocratic Medicine (Oath, Ancient Medicine, Physician, Law, Precepts, Airs - Waters - Places, Medical Decorum and Aphorisms), of Galen (That the best Physician is also a Philosopher), of Plutarch ( Moralia - On brotherly love) and over all of them, on the principles and commads of Jesus Christ - Christianity (New Testament), respecting the relations of the physician with his patients and his colleagues.