He got the job, but still lives in fear that his new boss will find out or that somewhere down the line, the truth will come out. Deliberate falsification of data on an employment form is cause for discharge. But no matter what the age, nothing can be done about it. The best answer isn't reassuring, it's only true. If an employer is going to discriminate against a job seeker on the basis of age, then the employer just isn't a good one to work for.
Nobody wants all the effort of job search to end in the wrong job.
And nobody is going to be suitable for all companies and job situations. The objective of the search is to find the job that suits the seekers. Recent college grads and newly discharged soldiers may have to fit into whatever job they can get. But experienced executives can contribute most in assignments that use their skills, talents and style. Of course, they have to know what are their skills, talents and style.