Yes, agree with above. This is in addition to your fund expense ratios (ER).
I just went through a crummy switch at my hospital. We initially previously had a provider that rolled their fees into the fund choices - so only folks that picked expensive funds were being charged more. I stuck to Vanguard funds and my total expenses were below 0.1%.
Now we switched and everyone pays a flat yearly fee of 0.31% in addition to fees, so most cost goes to about 0.4%. So basically the folks that knew to invest in low cost funds have to pay 4x previous, while folks that picked expensive funds pay around the same or slightly less. I argued this was dumb, but to no avail...
While not ideal, I would continue to invest. I tend to disagree - I think that even over 1.5% in fees it makes senses to invest, at least depending on your tax situation. I pay 35% federal and state tax combined in a very high tax state, so by maxing my 401k and putting in 18,000, I save about 6,000 in taxes every year. But even if expenses were 1.5%, that's only costing me 240 a year. Of course, if you have lower taxes or other goals, then it might not make sense, but I'd argue for most people even a crummy plan is a good idea.