Maybe I'm missing something here, but isn't this fraud? Do we want employees working for us who willfully steal by claiming false dependents? Today's unqualified dependent could be tomorrow's embezzlement. Isn't this covered by our employee handbooks, which should have a policy that states that theft is grounds for immediate discharge? But, at the same time, can Chrysler continue to build cars if it has to terminate 20,000 employees? Could you survive if you had to immediately terminate a percentage of your workforce? You could pick one or several employees to set an example, but then you run the risk of being scrutinized under the discrimination laws for who you selected and did not select.
Maybe the best way to handle this problem is to write it directly into your employee handbook. Change your termination policy to clearly state that claiming an unqualified dependent for company benefits is considered theft and subject to discipline up to and including termination. That way, expectations are established on the front end, and employees will have less of reason to cry foul if they are terminated for this type of insurance fraud.