Row of job interview candidates holding papers (Credit: Waraporn Wattanakul/

Although human resources is an essential function in any business, the optimum level of HR staffing can vary by industry, company size and boom-and-bust labor market cycles. ADP Research Institute recently analyzed HR staffing levels and how they differ by industry.

“In tight labor markets, organizations will bulk up their HR offices with recruiters and other specialists to gain an advantage in the pursuit of talent,” researchers said. “HR divisions might shrink when labor demand cools. We found that HR personnel counts, when measured as a share of total staffing, are up more than 10% since 2018. We also found evidence that might suggest that HR staffing can affect employee turnover.”

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