It's been 10 years since California started offering paid family leave to new parents.  

Ann O'Leary heads the Children and Families program at the nonprofit group Next Generation in San Francisco and she says close to 2 million Californians have taken advantage of the family leave provisions.

"When they've had a baby, or when they've had a seriously ill family member, they've been able to take some time from work, and yet still get some pay so that they can both afford to both be with their family and provide for their family," O'Leary said. 

O'Leary notes the large majority of the program's growth is attributed to more fathers taking time off to be with their kids.  

Since 2004, the number of fathers in the program has doubled.