Becoming a Lean Six Sigma Black Belt – and to a certain degree a Green Belt – is a major career move and should be considered carefully. There are not only the Pros; there are plenty of Cons. For you, it will definitely mean putting in more time. On top of someone’s normal job, the Black Belt is required to spend a considerable amount of time on the new commitment. Your additional time will not be rewarded financially at the outset. Your organisation will not be willing to put much money in something that is new and has not paid back yet.