The actor couple, who have a nine-year-old daughter, are associated with the state government's campaign against female foeticide and are making a film on the issue.
"We are working on the script at the moment and should be ready to roll it within a month or so. Both Kajol and I will be part of this, and we will speak about female foeticide," Ajay said in a statement here.
Recently, actor Aamir Khan had raised the topic of female foeticide in the first episode of his TV show 'Satyamev Jayate'.
A number of cases of female foeticide recently came to light from Beed, Solapur and Latur districts of Maharashtra.