Harrassment by Executive Committee Member to an Owner

Every time one of the EC sees either myself or my partner, he immediately begins making comments like ' it would be nice to have help putting out the bins?' or 'why dont you help in the garden?'  This is not done in a pleasant manner but in a raised voice at everytime he sees us.  We moved into an over 55's complex and pay levies so we dont have to do maintenance.  We are not obliged to do these things and the fact this particular owner wants to volunteer his time is completely his choice.  The problem as I see it is that the Executive Committee expect all of us to do the maintenance of the complex rather than having a 3rd party do the work and we pay for this from our levies.  What do I do about this continued harrassment and intimidation?