How many children do you have? One, two, three? In my case, I have four. I've always known that having more children adds complexity to any family and certainly gives a working mother more to juggle. But the findings of a recent study in Australia, called “Fertility and Labour Market Participation,” really got me thinking about the impact that having several children has on a mother’s career.

The study demonstrates that women with three or more children are significantly less likely to be in the workforce than women with two or fewer children. And despite being discouraging, the research makes total sense. I started to catalog my own personal experience with four children:

• I spent three years pregnant, and nearly two full years on maternity leave.

• I worked for many months, sleep-deprived, after returning from maternity leave, and I was performing at less than my best.

• I now struggle to find in-home childcare that is willing and qualified to care for four children, and I pay dearly for what I have.

• The complex logistics of my family require me to create an arduous plan at the start of each week to keep things organized.

• I typically have at least one child event per week that interrupts work in some way.

• Most importantly, I need to LOVE four uniquely amazing children. And that requires time and attention.

Wow, the impact of many children on a career is worse than I thought! But then I considered the positive aspects of my own career and the careers of other women that I know with three or more children. This brought me back to the core insight of my guide, The PRIMARY DILEMMA - working mothers are not all the same.

The ability to manage a career as a mother of many children can't be determined simply by the number of children that a person has. It's much more complicated. I personally know two women, each with 5 children, who are presidents of large companies. They have supportive and enabling husbands, and an incredible ability to create order in chaos. I know several women with 4 children who are successful surgeons. And I know lots of women with 3 children who are successful entrepreneurs, architects, designers, etc.

So after feeling mildly discouraged, I perked up. I am blessed to have four children and the energy to raise them and to maintain a career. And I am even more committed to the importance of The PRIMARY DILEMMA Project. Working mothers are not all the same. This is just one more example.

For more from Lynn Hall visit www.primarydilemma.com.