1. First of all, do talk.
Even if you see no immediate gain for yourself in doing so, it’s usually worth taking headhunters’ calls or answering their emails. You might have the most rewarding and seemingly secure job in the world right now, but that could change with the arrival of a new boss, a merger or any number of things (see Why Is It Easier To Find A Job While Employed?).
A headhunter might also be a useful contact for any of your friends, family members or colleagues who are in the market for a new position. Plus, headhunters who focus on particular industries can have useful information about what’s going on in the field that might help you in your current job. So take at least a moment to chat and be sure to get the headhunter’s contact info for future reference.