He noted that 40 percent of Japan' s workforce was non-regular and found it difficult to shift to full-time employment. The number of workers giving up hope of getting married and having children is "not small," Sakai said.
Abenomics aims to raise the birthrate, among the lowest in the world, to 1.8 children per woman from the current 1.3, Sakai said.
He noted Abe is pursuing policies to enhance childcare to keep women in the workforce as well as implement leave policies to allow workers to return to the workforce if they must take time off to care for an elderly relative.
The world is also experiencing its fourth industrial revolution and Abe plans to set up a council to design an investment strategy, including policies on deregulation, research and development, and human resources, Sakai said. The combined public and private investment is expected to be 4 percent of GDP, he said. More "green cards" will also be issued to foreign workers to improve the talent pool, he said.
He added that Abenomics was not meant to only benefit Japan, citing Sharp's decision to choose Hon Hai as a partner.
Follow CNBC International on Twitter and Facebook.