What is the downside to severance? The downside to severance includes financial drawbacks such as loss of steady income, potential loss of benefits, and uncertainty about future job prospects, as well as the impact on retirement savings and benefits.
In all states with the exception of Montana, some form of employment at will is recognized, meaning either the employer or the employee can terminate the employment relationship for any legal reason with or without cause, with or without notice, and at any time.
6 months is great, consider yourself lucky. your employer is obligated to offer you nothing in the US. Traditionally, you see about 1 month for every year of service, but mass layoffs tend to be more generous as they blindly impact even newbies.
Voluntary separation offers on the other hand, are not typically calculated based on years of service, but are rather a multiple of monthly salary (i.e., 5-6 months of salary) to ensure the offer is competitive and attractive regardless of tenure.