The expanded definition of unemployment:

includes people of all ages.
requires that persons should have taken specific steps to find employment or self-employment.
requires only a desire to find employment.
yields a lower unemployment rate than the strict definition.

includes those who have given up looking for work due to discouragement or lack of opportunities.

includes those who are underemployed, working part-time but seeking full-time employment.
includes those who are not actively seeking work but would immediately take a job if offered one.
includes those who are working in jobs that are not in line with their education or skill level.