Section 253BB(3) in The Maharashtra Zilla Parishads and Panchayat Samitis Act, 1961
(3)In the event of any vacancy on account of resignation, death, retirement, etc. in such Class III and Class IV employees, such vacancy shall be filled up by the Zilla Parishads concerned only from the feeder cadre of the Government employees on deputation:Provided that, if no such Government employee is available from the feeder cadre for promotion or filling of the vacancy, the concerned Zilla Parishad may fill up such vacancy from amongst its employees.]