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]
(..) But so often, they turn out to be- I don't know- disappointing and, um... stupid. So you, with that impressive r'sum'... and the big speech about your so-called work ethic- I, um- I thought you would be different. I said to myself, go ahead. Take a chance. Hire the smart, fat girl. (..)2006 The Devil Wears Prada