My opinion....for what its worht which is so many mega or miga whatevers of bandwith....is you don't choose an employer for its retirement plan.
After all...you have to get vested - depending on your plan it could be from 3-10yrs.
Your 401K is always your own...but....you may decide to switch for reasons other than retirement.
You have to be able to survive day after day after day & your retirement contribution won't be worth it, unless you've put in at least enough to get vested.
After you've invested 5-7 yrs..then you can decide if staying is worth it.
I actually figured out that staying beyond 20 yrs did not benefit me other than to add years of service. So..I stayed 23....then I left.