The employee got the job on ground of land he lost in process of land acquisition for the SEZ. It is not a new thing that has happened but everywhere this scenario is existing. You have to very cautious before initiating any action otherwise this may create serious situation. Since, a group of employees are involved in misconduct, your management need to escalate the matter to the district administration(Collector), You need to meet the Collector and appraise in person & in writing because the Collector is the chief administrator for all sorts of land acquisition. The DM will do the best be bold & stubborn on issue. It would be better to prepare a memorandum by the all the members of SEZ or Chamber of Commerce or FICCI to send to collector & Minister Industry, how SEZ suffers.