work hakama (loose at top, tight at bottom)
A traditional Japanese work garment resembling hakama, but with a distinctive shape: loose-fitting around the hips and thighs, and tight from the knees down. Often associated with laborers, craftsmen, or historical settings.
The craftsman is working while wearing work hakama.
You often see work hakama in period dramas.
The exact origin is uncertain. The kanji 猿 (monkey) may refer to the garment's shape resembling a monkey's legs, or it may be a phonetic or folk-etymological association.