In order to transfer PF accumulations you need not collect the signature of your previous employer. You can fill in form 13 with details of previous PF Account and the present PF account and submit it to the Regional/ Sub Regional Office of the Employees provident Fund Organisation where your previous PF account was maintained through your present employer. Once it is submitted the PF Office will collect the necessary documents like form 3A, form 10 (if not submitted)from your previous employer and transfer the amount.
Regards,
Madhu.T.K