（解説文要約）
ウサギは前足が短いので、坂を上るには得意ですが、下りは苦手と言われています。

そこで、人より遅れて坑内に下がり、

早く仕事を切り上げて坑外へ上がる怠け者を「ウサギ坑夫」と呼んでいました。

入坑時間が短く人の半分しか仕事をしないこの「ウサギ坑夫」も、

お弁当だけはしっかり食べていたそうです。

 

 

Rabbits are known to be good at running up slopes but bad at running down them, because they have short fore legs.
The phrase ‘rabbit miner’ borrowed its meaning from this legend.
These lazy ‘rabbit miners’ tended to begin working later than most people and finished much earlier than their co-workers. 
Though they worked fewer hours, ‘rabbit miners’ always made sure to have a big lunch.