This is inaccurate. People who are neither employed nor unemployed are not considered part of the labor force. For instance this would include retired persons, students, people taking care of children or other family members, and those who have no desire at all to work. Here [1] is a brief on the reasons people are not counted.
[1] - https://www.bls.gov/opub/btn/volume-4/people-who-are-not-in-...