These organisms are classified as a kingdom, Fungi, which is separate from the other eukaryotic life kingdoms of plants and animals. A characteristic that places fungi in a different kingdom from plants, bacteria, and some protists is chitin in their cell walls.
If you will reach full retirement age in 2015, you may earn up to $3,490 per month without losing any of your benefits. But for every $3 you earn over that amount in any month, you will lose $1 in Social Security benefits.
Minimum Benefit. Social Security does not set a minimum retirement benefit, whether or not you continue working after you retire and apply for benefits. To qualify for Social Security retirement, you must work and earn at least 40 work credits, by paying in to the Social Security system through payroll taxes. You can earn a maximum of 4 credits every year. If you don't have the work credits, then you can't draw any retirement.