help with badge or pin

[Mark]

can anyone help with identifying/translating this pin or badge? the back of the badge have the same 3 kanji as on the box. My guess is it is some civilian organization. It is well made.

 

Thanks!!

[John A Stuart]

I think 勤勞章 Kinroshu. Labor service Badge. John

[Mark]

thanks John, appreciate the help

[kaigunair]

I believe this badge was awarded to exceptional factory workers. Very neat!