De minimis Additional Expense

That cost which results when small amounts of electricity, ink, toner, or paper supplies are used for purposes other than performance of official duties. For example, the cost from a relatively small number of brief telephone calls, electronic mail messages, or internet sessions, result in de minimis, if any, additional expense to the Government. In contrast, the cost associated with large copying or printing projects, downloading large files, such as a motion picture video, or the contents of an entire compact disc, or other files with large space requirements, would exceed de minimis additional expense.