The employee receiving tips that exceed $20.00 in a given month is required by the internal revenue code to report them to the employer. It doesn't matter whether the employer requires the tips to be reported. Granted, if an employer doesn't want to be bothered with it, it puts the employee in the position of risking his/her job if he/she complies with the reporting requirement and the employer is incovenienced by the need to meet the employer requirements imposed by the revenue code. However, I believe our responsibility is clear. Once we have been made aware that the client received tips that should have been reported to the employer, we should advise the client to complete Form 4137. If the client declines to do that, I would decline to complete the tax return.