Key Employees are relavant to qualified plans for two distinct purposes: Family Attribution determination and nondiscrimination testing. Although not relevant to the topic of this page 26 USC Â§ 1563(e) also provides a definition for Highly Compensated Employees (HCE) and Substantial-Owners.
Then your body has less hemoglobin, and you cannot get enough oxygen. Iron deficiency is the most common cause of anemia. Iron deficiency anemia is caused by low levels of iron in the body. You might have low iron levels because you: 1  Have heavy menstrual bleeding.2  Are not getting enough iron in food.hen your body has less hemoglobin, and you cannot get enough oxygen. Iron deficiency is the most common cause of anemia. Iron deficiency anemia is caused by low levels of iron in the body. You might have low iron levels because you: 1  Have heavy menstrual bleeding.
Haemoglobin and Disease. Decreased levels of haemoglobin, with or without the concomitant decrease in red blood cells, can cause anaemia. Iron deficiency is one cause of anaemia, as it directly affects the ability to produce haem molecules, but there are several other causes of anaemia.halassaemia is caused when the production of haemoglobin chains is impaired, the most common forms affecting the alpha globin chain (alpha Thalassaemia) or the beta globin chain (beta Thalassaemia). The chains themselves can be normal, but the amounts produced are not; sometimes the genes can even be missing.