I concur with Rajagopalakrishnan R
1st u/s 192 it is the responsibility of the employer to deduct the tax, your relative's proposition that the Tax deduction amount be given to him is not healthy one . The relative will pay advance tax thereby nulling his tax liability but what about the employer? He would receive notice from tax authority for not deducting tax from salary when it is paid. And employer would be the one to go in court.
Even in case of King Fisher Airlines, they did issued form 16 to their employees but the tax was not remitted to the department. Consequently both the employer and employee received the notice. When the employees of king fisher airlines went they were assured by the respective AO's that this amount will not be recovered from them, all these notices are system generated . they were given protection u/s 205
I have seen such small cases where employer does not deduct tax of employer (be it grudge or otherwise) I advice to complaint it to TDS department , but obviously for job safety, employees prefer paying tax from their own pocket and NO TAX IS DEDUCTED FROM SALARY.
If TDS certificate is not issued then you can make that employer penalized but he wont be deducing your tax if he is not giving you the certificate. Hevay interest and penalty would be levied.