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 ...
Under the IRCA, all employers are required to keep completed I-9 forms on file for every employee hired after Nov. 6, 1986. These records must be retained for at least three years from the date of hire, or one year after termination, whichever is greater.hile federal law requires such records to be kept for a minimum of four years after the date the tax to which they relate becomes due or is paid, whichever is later, California law has a six-year statute of limitations period, so employers should keep such records for a minimum of six years.