Bursitis around the shoulder can be caused by a repeated minor trauma such as overuse of the shoulder joint and muscles or a single more significant trauma such as a fall. In overuse type injuries, bursitis is often associated with impingement and tendonitis (inflammation) of the rotator cuff tendons.
IRS payroll tax-related records-keep these records for at least four years following the period covered by the records. Common Law Requirements. There are no common law requirements as such for how long employers should keep certain kinds of records.nemployment compensation-keep all records relating to employees' wages and other compensation, as well as all unemployment tax records, for at least four years. Family and Medical Leave (FMLA) - keep all payroll, benefit, and leave-related documentation for at least three years after conclusion of the leave event.
EEOC Regulations require that employers keep all personnel or employment records for  one year. If an employee is involuntarily terminated, his/her personnel records must be retained for one year from the date of termination. Under ADEA recordkeeping requirements, employers must also keep all payroll records for three years. Additionally, employers must keep on file any employee benefit plan (such as pension and insurance plans) and any written seniority or merit system for the full period the plan or system is in effect and for at least one year after its termination.