Industrious person (4,3)
I believe the answer is:
busy bee
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">industrious person</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for busy bee that I've seen before include "Go-getter" , "Industrious person" , "Very active person" .)