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.
Qualifying for Social Security. Workers do not automatically qualify for Social Security retirement benefits. They must work and pay a minimum in Social Security taxes for at least 40 quarters (10 years) during their working lives if born in 1929 or later. These 40 quarters need not be consecutive.