ANOTHER PIECE OF METAL???

I've always wondered why my former employer never wore his wedding ring. Throughout my short stay in his company, I never saw that piece of metal on his finger. Once or twice, I confronted him but his response was always automated: "What for? It's just a piece of metal!"
Recently, I encountered a married woman who works as a marketing personnel in an oil company. I noticed also that the symbolic finger of marital bond was also not adorned with a ring. Being the curious cat, I asked her if she was divorced or separated and she gave me a surprising look before replying excitedly that she is happily married. "Where is the wedding ring?" I inquired.
She gave me a sly grin and said in a low tone "it's not good for my career"