Can I enroll in employer short term disability insurance even though I declined it 2 1/2 yr ago?

My employer’s open enrollment apparently does not include their short term disability insurance (which employees pay 100% of premium.) They said since I declined it 2 1/2 years ago when I started I will never be eligible. My friend in the insurance business says this is FALSE.

Is it necessary to buy Rental Car Insurance even though i have my car insurance policy with me?

I have a car and have taken Auto insurance for it.
Now my question is if i take a rental car, then my auto insurance policy for my car covers it or i need to take separate insurance for the rental car? When i took the auto insurance policy, they have taken my car details and [...]