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.
Employers in the United States generally pay their employees weekly, biweekly, semimonthly or monthly. State law usually dictates the time frame that employees must be paid by; an employer can pay more frequently but not less. Some employers pay employees on a biweekly and/or semimonthly basis. Some key differences exist between the two. The main difference between a biweekly and semimonthly payroll is that biweekly happens every two weeks while semimonthly occurs twice per month, such as on the 15th and final day of the month.