Everything has a limit. Your employee might need to do some corrective distributions, because these are for the person, not the employer. You can't max out at multiple employers; the Employee either has or has not maxed out.

Did you search the web or the IRS for the information for the tax year in question and for this taxpayer's age, and the details (such as, more than one account or plan is being contributed into)? You have to look it up, to know what applies.