The first bunch are now coming to the 7 year itch (fully vested in Provident Fund)
If you hear anyone mention they are delaying their decision to depart awaiting this development let them know 'tis a red herring. Suppose you have five years in - it is quite possible the company owes you more than you have in the provident "A" fund as the amount they pay you must be equal to or greater than your EOSB. There is a link somewhere on HR Direct which calculates that latter amount for you and you can discover whether or not it is in your favour to leave ASAP.
Errr..if your EOSB is more than your Provident after seven years you really must have screwed something up. Or left it in the default choices, or been too lazy to take the free Mondial consults or something. Even the most modest investment choices, hands off, outperformed the EOSB by a wide margin.
At least they did for me!
Can't speak to the actual attrition and don't care. But if there is a sizable demographic hanging on for the seven years, I certainly do think it could be just hanging on for the extra 25%.
But yes, by all means do the calculation and realize that if the EOSB is better then why on earth are you still slaving away for the machine?!
Take it and run.