Rajasic action carries a very different energy. It is performed by someone who craves a specific outcome — 'I want this, I need that, I must have it.' Or it is done with a heavy sense of ego: 'Look at what I am accomplishing. See how hard I work.' Often both are present at once.
The telltale sign is bahulayasa — great strain. Not the honest tiredness that comes after a full day's work, but the exhausting inner tension of chasing outcomes and protecting one's image. The rajasic doer works hard, sometimes very hard, but the engine running underneath is anxiety, not clarity.
Rajasic action is not evil. Ambition and drive have built civilizations. But the Gita points out its hidden cost: the doer never arrives at peace. There is always one more result to chase, one more recognition to earn. The treadmill never stops.