○ need your employer give you an essential service letter to claim your position is essential service, my employer give one from a federal officer to enter office during lockdown.( YOU need similar one for you TN)
○ depends, if your employer's business can fall into the category , e.g. your employer is AT&T, telecom is essential service, your employer is Wal-Mart, grocery is essential service, etc.
○ 401 K can always roll over to your personal IRA if left the company, IRA can take out after 65, then pay US tax ( if convert to roth IRA already, no need). SS no idea.