Copper: Copper is a trace element that is essential for most animals, including humans. It is needed to absorb and utilize iron. The influence of copper upon health is due to the fact that it is part of enzymes, which are proteins that help biochemical reactions occur in all cells.
To facilitate the inspection, employers shall do all of the following: (1) maintain a copy of each employee's personnel records for a period of not less than three years after termination of employment, (2) make a current employee's personnel records available for inspection, and if requested by the employee or representative, provide a copy at the ...
Â· just now. Report Abuse. According to the IRS, employee records should be kept for a minimum of 4 years, but I suggest 7 because under the federal guidelines that's about how long your really need to keep any records.Check with your state's Worker's Compensation or L&I department to get their minimums. just now. Report Abuse. According to the IRS, employee records should be kept for a minimum of 4 years, but I suggest 7 because under the federal guidelines that's about how long your really need to keep any records.