Japan has a very strict corporate culture which has been in place since World War II. In the 1970's and 1980's when Japanese companies were world beaters and manufacturing processes like 'just in time' were revered across the world companies like Sony and Nissan became household names. The world has moved on but Japanese corporate culture has not. Deference to your boss and no promotion until you are in your 40's is still the way business operates in government and big corporations. Risk is tantamount to failure and so entrepreneurship is virtually non existent. Peter Day looks at how some are trying to encourage change in corporate and working life.