Is a company required to tell me why i'm fired?

Nevada is an at-will employment state where your employer can dismiss you for no reason at all, so long as it is not a prohibited reason. "Since employees in Nevada are presumed to be at-will, an employer can dismiss an at-will employee with or without cause, so long as the dismissal does not offend this state's public policy. State of Nevada v. Dist. Ct. (Anzalone), 118 Nev. 140, 151, 42 P.3d 233, 240 (2002)." Based on the facts as presented, unless you have good cause to believe that your termination was for illegal purposes, the reason for termination (if there is one) is really irrelevant to the inquiries. However people are curious and entitled to know what their employment file contains.  NRS 613.075 provides that an employee, up to 60 days after termination, must be given the opportunity to inspect and obtain a copy of the employee file.   The inspection must take place during normal business hours; copies must be provided at actual cost.  The employee is entitled to submit a written rebuttal in direct response to any entry in the employee file; the employer must maintain the rebuttal in the employment file.