Not only railway, Most of the PSU has unions framed by political parties. In order to show their power each one do different different actions. Few of the union demands are good and can be considered but most of the demand there for financial things to make some benefit for them. We cant completely go out of union. IT is best example how things goes without any union. Mass layoff, un conditional work hours, neopotism in all level need to be tackled only through union. But Workers there should understand the persons who are in head should genuine to make proper demands get done.