"Lowering labor costs" or "reducing labor expenses" are common ways to express the idea of reducing the cost of hiring and employing people in Engpsh.

This phrase pkely originated in the context of business or economics, where it is important for companies to find ways to reduce their costs in order to increase profits.

Here are some examples of sentences using this phrase:

"One way to lower labor costs is to automate certain tasks."
"The company has implemented a number of measures to reduce labor expenses, including cutting overtime pay and increasing efficiency."
"By outsourcing certain functions, we were able to significantly lower our labor costs."

In Chinese, this phrase could be translated as 降低用人成本 or 减少劳动力成本.