A few excerpts from a note by Goldman Sachs economists Jan Hatzius and Daan Struyven:
On a broad range of measures, the US economy is now at full employment. Headline unemployment has fallen below most estimates of the structural rate, the discouraged worker share is back to pre-recession lows, and the still somewhat elevated share of involuntary part-timers is arguably structural.
And while the employment/population ratio remains well below its pre-recession level, the gap is fully explained by a combination of population aging and declining participation of prime-age men. This trend among prime-age men has continued for over six decades, has not stood in the way of a strong recent wage acceleration in that demographic, and therefore looks structural.
…
Job growth remains well above the pace needed to stabilize unemployment. The speed of the likely overshoot is comparable to the average postwar cycle, and we have lowered our end-2018 unemployment rate forecast to 4.1% from 4.3% prior.
emphasis added