Works hard (5)
I believe the answer is:
toils
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">works hard</span>' is the definition.<br/ ><span class="explanation-format__explanation">(to toil is to work hard)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for toils that I've seen before include "Works hard" , "net" , "Labours; snares" , "nets" , "making snare" .)