Honesty is central to Sikh ethics.  But I do not see that promoted anywhere.  All I see is 'earn money honestly', which is only part of the picture. Every knows the quote of Guru Nanak Dev Ji: "Truth is the highest virtue, highest still is truthful living".  In Sidh Gosht, Guru Nanak Dev Ji also explains that 'Truth (God) loves (is drawn to) the Truthful (i.e. honest/pure hearted people)'. Truthfulness means honesty in our speech, thoughts, actions and intentions. I see that hones