The inverse correlation between the two series is obvious. We can also see the accelerating growth of women in the workforce and two-income households in the early 1980's. Following the end of the last recession, the employment population has three times bounced at 58.2% — a level that harkens back to the 58.1% ratio of March 1953, when Eisenhower was president of a country of one-income households, the Korean War was still underway, and rumors were circulating that soft drinks would soon be sold in cans. The latest ratio is 0.4% off the interim low and remains in the center of the oscillating ratio of the late 1970s and early 1980s.
The employment-population ratio will be interesting to watch going forward. The first wave of Boomers will be a downward force on this ratio. The oldest of them were eligible for early retirement when the Great Recession began, and the Boomer transition to the retirement will accelerate over the next several years.