To help remedy that, the Labor Department officially unveiled an online tool Monday that lets workers find out if they have back wages coming their way. If the company paid back wages and some has yet to be claimed, a worker can check to see if he or she is on the list of employees who have money coming to them. Even with the new searchable data base, the department will continue to search for missing workers, he said, including with online searches and by working with advocacy groups and foreign consulates to find the workers.