Well, in the strict business sense, there's no betrayal here at all. As an employee, you are free to chose wherever you want to work without anyone's being offended.A friend of mine was so distraught today, she said a valuable staff of her resigned from her organisation a few months ago, saying she was relocating to another state. Later on my friend discovered a dwindle in the clients of her organisation and was so worried, only to discover her ex employee joined a starter company similar to my friends line of business where they doubled her salary and made her head of operations, she stole all her clients and business tactics , my friend feels so betrayed after all the trainings this ex staff received. My question is did she betray her or aimed for greener pastures?