Addressing a large number of party workers and fans at Avanashi in nearby Tirupur district, he said it was not enough to bring in crowds for a meeting. One should come and work at the grassroots level to bring in the 'much needed' change in society, he said.
The actor-cum-politician is on a tour of Coimbatore, Tirupur and Erode districts to meet people and workers.
Earlier, Kamal Hassan paid homage at the Farmers memorial at nearby Perumanallurby by placing a wreath there.
The actor said he supported early implementation of the long pending Athikadavu-Avanashi Water project. He met those who were fighting for it's cause over the years.
Earlier, talking to reporters at the city airport, Kamal Hassan said he had come to meet members of Fans Association and party workers.
Mr Haasan took the political plunge by launching the "Makkal Needhi Mayyam" at Madurai on February 21, saying his outfit was committed to politics free from "games of caste and religion" and would focus on good governance.
The top actor had also touched upon key issues concerning Tamil Nadu, including the Cauvery river water dispute, alleged corruption and vote for money.
He had told his followers to realise that they have a big responsibility and they had to be pioneers.
Mr Haasan had earlier visited former President A P J Abdul Kalam's residence at Rameswaram, where he sought blessings from the late leader's brother.