"It's hard to make good decisions in the labor market, for example, without a deep understanding of it." - Can you provide an example? Last job I took I consid

"It's hard to make good decisions in the labor market, for example, without a deep understanding of it." - Can you provide an example? Last job I took I considered money, job specifics, hours, vacation, career growth, the usual stuff. No deep understanding of the labor market.