FYI: Practically speaking, there are two U.S. employer-based retirement systems, one in relatively good shape and one not. Nearly every large company sponsors a low-cost 401(k) plan, generally equipped with auto-enrollment and auto-escalation programs. In contrast, half of small companies have no defined-contribution plan, and those that do generally carry pricey funds and limited features.
Regards,
Ted
http://beta.morningstar.com/articles/839326/fixing-smallcompany-401ks.print.html