Costochondritis is a painful condition of the chest wall. It is caused by inflammation in the joints between the cartilages that join the ribs to the breastbone (sternum). Although painful, it is not a serious condition.Usually it has no obvious cause and settles over time.ostochondritis is a painful condition of the chest wall. It is caused by inflammation in the joints between the cartilages that join the ribs to the breastbone (sternum). Although painful, it is not a serious condition. Usually it has no obvious cause and settles over time.
Author: Alice Gilman. A calendar year and an employer's pay periods do not always coincide precisely. Approximately every 11 years, an employer that pays employees on a biweekly basis will have an extra pay period. An employer that pays employees on a weekly basis will have an extra pay period every five or six years.
Also, when you factor in leap years, which have 366 days instead of 365, over the course of several years, the extra days add up and require biweekly employees to receive an extra paycheck, amounting to 27 pay periods instead of 26. This does not happen with a semimonthly payroll, which always happens 24 times per year.