Most employers issue only paychecks every two weeks. In the meantime, payroll processors like ADP make millions from investing worker salaries before they’re paid.

by TrueBirch

There are efforts to use technology to shorten the gap between someone working and getting paid. To learn more, check out two pieces (first, second) that NPR ran on this topic last year.

I found the numbers in ADP’s quarterly reports. The date reflects the total amount ADP made in the quarter that ended on the given date. I made the chart in R. I pasted my source code as a subcomment below.