Non-searchable Job

This underground job where several workers were working was basically a non-searchable job. There was a very minimum chance of hearing about the job on the streets. For most people, it was a ghost job or you can say it didn’t exist at all. But still, there were people working. They were leaving their house in the early morning and coming late at night, tired and with money in hand that was supporting the poor worker’s family. There were some rumors about it which were spread in the streets.