People here have a strong 'work ethic'. [=a strong belief in the importance and value of work]
The company has its own 'code of ethics'. [=its own set of rules about good and bad behavior]
His 'ethics' are questionable. [=some of the things he does may be morally wrong]
(..) l'm interested in the untold stories, the secrets deep inside the hull. We're using robot technology to go further into the wreck... ..over salvage rights, and ethics. Many are calling you a grave robber. Nobody called the recovery of King Tut ''grave robbing''. - What is it ? (..)1997 Titanic