What qualifies you for Permanent Alimony?

Hi, I would like to know what can help a person to receive Permanent Alimony? On What grounds can a person request to receive Permanent Alimony? Thank you for your help!!

I hear that it’s rare now-a-days but can be granted for marriages that had lasted for many many years (decades). I also read an instance where the supporting spouse was totally unable (even in the future) to support her/himself because of a debilitating illness.

Permanent alimony can be awarded in the case of a lengthy marriage where the dependant spouse can demonstrate an inability to support themselves.