At my company we clock in and out using a website called HRX. At the end of the pay period we approve our time punches. Over the course of the two week pay period I accumulated 0.5 hours of overtime. Of course I approved my time punches because I sat there and worked the whole time. However once I approve them my boss also needs to approve them. Without asking, she changed my hours so that I don’t get any of that 0.5 hours of overtime pay. Are there any legal implications around this? Do I have any basis to fight this or just need to live with it for now?