What is CAREER?
If you try to consider and answer this question, you can get much of things that can give you the answer of your query itself about "Dual Career Women".
Now let me tell you one more thing related to life and career. We all know that we human-being are living three lives i.e. PERSONAL LIFE, SOCIAL LIFE and PROFESSIONAL LIFE that all are totally different to each other because of role that are defined and applied to it but are still connected.
Now let me continue with your subject line and query "Dual Career Women".
Personal Life where a woman working at home for family, for children, for husband, that she is doing since a long time and have to do so whole life is totally are personal life engagements and responsibilities that cant be called responsibility which is a sense of duty and a Mother, Wife, Sister love to do work for herself actually that are for her family not because these work are obligations to them.
A woman when goes out or say enter into outer world with some changes and development in PERSONAL LIFE and with a motive of some kind of work e.g. Crèche, Engagement with NGO’s, Life and other Social consultation or the work likewise that allow her to be social, put them into a SOCIAL LIFE. But when these Social Services and Engagements, start being adopting as an occupation by woman and other, became a profession (Professional Life).
For example, our respective Sr. Member and Super Moderator (Cite Contribution) Ms (Cite Contribution) who is a daughter and loves to do work at home (Household tasks) in her personal life, is also a professional (Living Professional life) and i understand and believe she can never claim that she is having a Duel Career or a “Duel Career Woman”. If she, I would love to know more in her words
Therefore, in simple words, the work (Household tasks) a woman is doing at home in her PERSONAL LIFE since a long time and have to do the same whole life can never be called a CAREER on any terms.