US job openings increased to 7.523 million in September, up from an upwardly revised 7.190 million in August. Hiring rose to 5.402 million, while voluntary quits climbed to 3.365 million, pushing the quits rate to 2.1% from 1.9%. Meanwhile, layoffs declined to 1.641 million from 1.768 million, with the layoff rate falling to 1.0%.