You don't say whether your friend notified his employer, or what the company's response was, but even past the 180-day limit, your friend still retains some USERRA rights.

你并没有提到，你的朋友是否已经通知了他的雇主，或者公司是否已做出回应。但即便超过了180天的限制，你朋友依然享有userra的部分权利。

youdao

So the question becomes, does USERRA hurt us or help us?

FORBES: Can You Believe This Is Legal? Military Guard and Reserve Employees Can Be Laid Off During Deployments

Still, says Wright, who helped craft USERRA when he was working with the Labor Department, an employer may well be asked to justify a layoff decision in court.

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