Final answer:
The percentage of the labor force that is unionized has fallen by 66 percent since the 1950s due to various factors like the loss of factory jobs and the rise of part-time and contract labor. In 2021, only 10.3% of all workers were union members.
Step-by-step explanation:
The percentage of the labor force that is unionized has fallen, 66 percent since the 1950s.
According to the provided information, the share of wage and salary workers who belong to unions has declined dramatically since the early 1950s. In 2021, only 10.3% of all workers were union members, compared to a higher percentage in the 1930s and 1940s.
There are multiple factors that have contributed to this decline, including the loss of factory jobs, the rise of part-time and contract labor, and the increasing number of low-paying service sector jobs that married women entered in hopes of supplementing family income.