Looking for a pay bump? A "nondegree credential" can help.

So-called nondegree credentials (NDCs), such as professional certifications and licenses, can boost earnings, particularly for workers without college degrees, according to research from the U.S. Census Bureau.
These credentials, which demonstrate that a worker has completed training or developed a specific skill, can pay off in the job market. NDC holders had median earnings that were 16% higher than those of workers at the same level who lacked the credentials, the Census data shows.
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