Silicon Valley has a diversity problem, alright. But it's not what you think.

After months of watching high-tech companies disclose their employees' demographics in response to public pressure, many of us had gotten the idea that the tech industry is driven primarily by white and Asian employees.

Most companies disclosed that their black and Hispanic employees made up only 3 to 4 percent of their workforce combined.

But it turns out that tech's diversity problem isn't a lack of workers of color. It's a lack of economic balance.

As USA Today reported, for every tech job created, four service workers are needed to support it. But service workers are hired by outside contractors, in a segregated system which brings down wages and hurts our economy.

These service workers are primarily black and Latino.

The Wall Street Journal called them Silicon Valley's 'Invisible Workforce.'

Silicon Valley security officers aren't planning to stay in the shadows. They are uniting to improve the quality of their jobs, and strengthen the region's economy. Our communities are stronger when all workers have money in our pockets to spend at local businesses. And the tech industry can afford to ensure their security contractors contribute to a healthy Silicon Valley.

Read the full report from Working Partnerships here.