First, the rate did dip to 63.5 once during ReaganÂ’s presidency, in September 1981.
Second, if you smooth out monthly volatility, labor force participation rates were close to indistinguishable during the final year of Carter and the first year of Reagan, most of which was a recessionary period. The average labor force participation rate in 1981 under Reagan was only one-tenth of 1 percentage point higher than it was in 1980 under Carter.
So the focus on Carter has a grain of truth, but even there the ad overplays its hand a bit.
That's because economic factors are not the only things that affect the labor force participation rate. The other big one is demographics, particularly the aging of the population.
In the 2000 Census, the number of Americans aged 60 to 69 -- that is, those who had recently hit retirement age or would do so within a few years -- was to about 20 million. But thanks to the Baby Boomers, the number surged in the 2010 Census to more than 29 million, almost a 50 percent increase. This matters because the more people aged 60 to 69, the more people who are passing into retirement age -- or, to put it another way, leaving the labor force. Even though more people proportionally are remaining in the workforce after retirement age, the difference isnÂ’t big enough to cancel out the flood of new retirees.