I've got one with my girl for house, car and food expenses (added value when she requested Schengen, US and Canadian visas) and one with my business partner to put the shop profit. I have my own account as well of course.
Yes, 600 baht for every elder. Beside civil servants, police and military got their own. Others can pay monthly to the social welfare on a voluntary basis (I for one pay 60 baht per month).
I haven't meant you invested by yourself. The company you work for invested under the BOI program and as such got special privileges for their foreign staff.