Many immigrants have different skills from the native-born population, and complement the skills of the U.S. labor force. Immigrants make the economy more efficient by reducing bottlenecks caused by labor shortages, both in the high-skill and low-skill area.
That’s because the educational backgrounds of immigrants and native-born Americans are different. Statistically, the average skills of native-born American workers are distributed in a bell-shaped curve. Many Americans have high school diplomas and some college education, but relatively few adults lack high school diplomas and even fewer have Ph.D.s in math and science.
In contrast, immigrants’ skills are distributed in a U-shaped curve, with disproportionate shares of adults without high school diplomas who seek manual work and others with Ph.D.s in math and science. Among native-born Americans, 91% have a high school diploma or higher, whereas only 62% of noncitizens do. Foreign-born workers are about 16% of the labor force, according to the Labor Department, yet represent 49% of the labor force without a high school diploma, 25% of all doctorates, and 35% of doctorates in science, math, computer science and engineering.
Since immigrants have a smaller share of high school diplomas and B.A.s, which is where native workers tend to be concentrated, they do not compete directly with most native-born workers. Now think about the arguments some politicians are making about how immigrants take away jobs from Americans during this economy. If the distribution of labor shows that immigrants are entering areas of the labor force that native-born Americans choose not to work in, then those immigrants are filling a vital role in the economy.
Immigrants choose different jobs from native-born Americans. Low-skilled immigrants are disproportionately represented in the service, construction, and agricultural sectors, with occupations such as janitors, landscapers, tailors, plasterers, stucco masons, and farmworkers.
They come to be fruit pickers, as well as janitors and housekeepers, jobs native-born Americans typically do not choose as careers. However, immigrants are not found as crossing guards and funeral service workers, low-skill jobs preferred by Americans. Government, education, health, and social services, are sectors that employ few immigrants. Just looking at the fields of work that immigrants enter into compared to native-Americans, the fields that native-Americans enter compared to immigrants vary quite substantially in terms of how many occupy a given field.
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