Published September 10, 2025
Employment Cost Index: Total Compensation Beyond Wages
Average hourly earnings from the monthly jobs report get the headlines, but the Employment Cost Index (ECI) is the measure that CFOs and HR leaders should watch most closely. Unlike hourly earnings, the ECI controls for compositional shifts in employment and captures the full cost of labor — wages plus benefits including health insurance, retirement contributions, and paid leave. It is the most comprehensive and methodologically sound measure of labor cost inflation available.
What the ECI Measures
The Employment Cost Index, published quarterly by the BLS, tracks the cost of employing a fixed set of jobs over time. By holding the job mix constant, it eliminates the compositional bias in average hourly earnings — where a shift in hiring toward higher or lower-paid occupations can change the average without any individual receiving a raise. This makes the ECI the purest measure of how much more it costs to employ the same workers doing the same jobs.
The ECI reports total compensation costs broken into wages/salaries (about 70% of total) and benefits (about 30%). Benefits include legally required costs (Social Security, Medicare, unemployment insurance, workers compensation) and voluntary costs (health insurance, retirement plans, paid leave). Track both components on FRED alongside the wage growth data from the jobs report.
Why the Fed Watches the ECI
The Federal Reserve considers the ECI one of the most important inflation indicators because it captures the true trajectory of labor cost pressure without the noise of compositional shifts. When ECI total compensation growth exceeds 4% year-over-year, it signals labor cost inflation that is likely to feed through to services prices and keep core inflation elevated.
The quarterly release frequency means the ECI provides less frequent but more reliable signals than monthly hourly earnings data. Track ECI releases on the economic calendar and compare trends with monthly jobs report earnings data. When both indicators show accelerating labor costs, the signal is strong and consistent.
Using ECI for Compensation Strategy
Use ECI data to benchmark your total compensation growth against the national average and your industry. If your total compensation is growing faster than the ECI industry benchmark, investigate whether you are overcompensating (reducing margin) or investing in talent quality (potentially justified). If growing slower, assess retention risk and competitiveness.
Benefits cost inflation — particularly health insurance — often drives total compensation growth even when wage growth is moderate. A company holding wage increases to 3% while health insurance premiums rise 8% may have total compensation growth of 4.5%. Separate these components in your budget analysis and track benefits-specific inflation through CPI healthcare data and ECI benefits components. Monitor employment indicators for the full labor market context.
Frequently Asked Questions
The ECI measures the cost of a fixed set of jobs, eliminating compositional bias. Average hourly earnings change when the mix of high and low-paid workers shifts, even without any individual receiving a raise. The ECI also includes benefits costs (about 30% of compensation), while average hourly earnings capture only wages.
The ECI is released quarterly, approximately one month after the quarter ends (January, April, July, October). While less frequent than monthly wage data, it provides a more accurate and comprehensive picture of labor cost trends that is worth waiting for.
ECI total compensation growth above 4% year-over-year is generally considered inflationary when productivity growth is below 2%. The Fed views sustained ECI growth above this level as inconsistent with its 2% inflation target, making it a potential trigger for continued monetary tightening.