A Fremont company is paying more than $43,000 in back wages and penalties after labor regulators found eight employees brought from India were grossly underpaid and overworked while assigned to a special project in the U.S. The probe announced this week by the U.S Department of Labor uncovered several egregious violations at Electronics for Imaging Inc., a printing technology specialist that generated revenue of $728 million last year, when the misconduct occurred. While engineers and other technology employees are paid more than $100,000 salaries and lucrative stock incentives, workers handling other jobs for the same employer often receive paltry pay if they are based in countries such as India, China and Mexico.