For CPAPF and MMB cash out there are 4 different forms required. The process usually starts 20 days prior to the last day of employment and the fund manager will not be held accountable if the funds would have risen if left until the last day. You will receive the vested amount minus the legally required withheld MMP amount (1.2 x last month's wages x reckonable years of service) within 7 working days after your last day of employment. After that and if the 2 forms consisting of MMB-W and MMB-W(SD2) for MMB withdrawal are submitted properly then the MMB cash-out process will be commenced and will take up to a month. All told the process takes about 2 months to complete and the funds are not taxable income in HK. Of course they may be viewed differently by other tax jurisdictions you may be subject to. The necessary timeline could be a factor if the process is not initiated until after your last working day.