The blonde beauty made her most-recent movie appearance in 2014's Annie, and since tying the knot with Madden in 2015, she's rejected a number of lucrative offers to return to the business.
Instead, Diaz is said to be eager to make the most of her new-found "freedom".
An insider told the Daily Star Sunday newspaper: "Cameron is constantly inundated with film scripts trying to tempt her out of retirement but she's just not interested.
"She's happy, in love and wants to make the most of her freedom and free time."
Earlier this year, a source claimed that Diaz dreams of having a baby with Madden, but also that, for now, she's enjoying being a "housewife".
The insider explained: "She would love more than anything to be a mum. At this point they would be very happy with the miracle of one child.
"They aren't really thinking past the first one at this point. They would love to have the chance to be parents."
Diaz's last films were in 2014, when she released The Other Woman, Sex Tape and Annie.
- Bang! Showbiz