I guess that seems to be the standard among legacies, but at blue globe excess of the 415 limit gets spilled into a retirement health account and isn't accessible until you retire, and then only usable for health expenses. If you die before you exhaust it your remaining balance is retained by the Fund.That means that (for most properties) any company contributions that are made after that point come back to you as taxable income. It's a nice 15% or 16% pay bump, but you are getting taxed on it. This is one reason why increasing the company contribution to a higher number really isn't a big bargaining priority for many captains as it doesn't do anything for them. It would benefit more junior pilots however who don't hit the 401a limits yet.
It's not bad, still get the tax free bennies but some pilots would rather have the $ as taxable income