I generally try to encourage clients to use NRAs at age 62 or later (safe-harbor), but for the occassional client that insists on using a lower NRA (usually to help increase the tax deduction where high-3 comp avg. is less than 415 dollar limit) is there any good statistical info that is either free or via a modest subscription service that provides some industry norms for retirement ages (any DOL workforce surveys or anything like that). Of course the small family businesss that breeds purebred dogs might have a hard time finding good statistics, but for common occupations there must be some data free or at a reasonable price. Any ideas ? thanks.

Not usre, but your clients are aware of that modest $9k user fee for IRS review?

AMA and ABA may have statistics, though you may not like them.