noun
farmer's tan; construction worker's tan
Colloquial term for a tan pattern where only the arms and face are deeply tanned, typical of outdoor manual laborers like construction workers (土方).
夏の終わりには、みんな土方焼けになっている。
By the end of summer, everyone has a farmer's tan.
彼は現場仕事で土方焼けがすごい。
He has a deep construction worker's tan from working on site.
日焼け is the general term for sunburn or suntan, while 土方焼け specifically refers to the uneven tan pattern of outdoor laborers.
Compound of 土方 (どかた, 'construction worker') and 焼け (やけ, 'burn/tan'), literally 'construction worker's tan'.