下働き[shitabataraki] subordinate work
共働き[tomobataraki] (husband and wife) both working
勤め働く[tsutomehataraku] to work diligently
軽労働[keiroudou] light labor
港湾労働者[kouwanroudousha] longshoreman

自働[jidou] automatic
自働化[jidouka] automation
実働時間[jitsudoujikan] actual work hours
囚人労働[shuujinroudou] prison labor
重労働[juuroudou] heavy labor

ご苦労様[gokurousama] thank you very much for your ...
御苦労さん[gokurousan] I appreciate your efforts
慰労[irou] recognition of services
過労[karou] overwork
過労死[karoushi] death from overwork and mental stress

気苦労[kigurou] worry
漁労[gyorou] fishing
共労者[kyourousha] coworker
勤労[kinrou] labor
勤労階級[kinroukaikyuu] salaried class

軽目焼[karumeyaki] hard caramelized sugar candy
気軽[kigaru] carefree
軽い[karui] light (i.e. not heavy)
軽んじる[karonjiru] to look down on
軽音楽[keiongaku] light music

軽歌劇[keikageki] light opera
軽快[keikai] casual (e.g. dress)
軽機[keiki] light machine gun
軽機関銃[keikikanjuu] light machine gun
軽気球[keikikyuu] dirigible balloon