We already are experiencing a second wave of layoffs," said Danielle Goldfarb, head of research at the polling company RIWI, which specializes in tracking and predicting trends. A high number of these are repeat layoffs, Goldfarb said. A survey from RIWI and Cornell University released last month found that, among an estimated 36 million workers called back to their jobs after a layoff this year, 27% have been laid off again, while another 36% were told they could still be laid off again.