My workers compensation claim was made in the State of: Nebr.

First post but visited many times. This is my 3rd round of MMI in this claim of over 6 years. They say "failed back surgery syndrome" that led me to my spinalcord stimulator in this last round. I am receiving weekly benifits from the second MMI after a fusion. I have had one lawyer tell me l should simply request a new impairment rating and another say I should go after loss of earning capacity and lifetime benifits based on my FCE report of sedentary restrictions and my daily meds.
I am still working, non physical now, at my same job only because i've been there so long and still an asset. My question is couldn't I request a new impairment rating now and if/when down the road I can no longer work then use the LOEC card?