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

只管[hitasura] nothing but
只中[tadanaka] middle
只今[tadaima] Here I am
只ならぬ[tadanaranu] unusual
只只[tadatada] absolutely

只者[tadamono] ordinary person (usu. in neg. sentences)
真只中[mattadanaka] right in the midst of
只乗り[tadanori] free ride (e.g. on train)
只働き[tadabataraki] working for free