“…Broadly speaking, changes in the overall size of the labor force come from changes in labor force participation rates (LFPRs), changes in the demographic makeup of the population, and changes in the size of the population. Research has documented the role of changes in LFPRs, especially the jump in the number of retired people (Briggs, 2021;Faria e Castro, 2021;and Kaplan et al, 2021) and the drop in the LFPR of mothers of young children (Aaronson andAlba, 2021, andPitts, 2021). However, demographic trends have also constrained the size of the labor force.The labor force is defined as the number of people aged 16 and older who are either employed or unemployed, where unemployed is defined as not having a job, being available for work, and having actively searched for a job in the past four weeks or waiting to be recalled from a temporary layoff.Unless otherwise indicated, when we refer to the population or labor force, we are referring to people who are neither institutionalized nor in the military (which is called the non-institutionalized civilian population) and who are aged 16 and older.…”