As such, exercise physiology professionals often have the responsibility of conditioning a person to a higher level of fitness and/or health while, at the same time, being aware of safety issues (risk of injury, illness, environmental exposure, etc.) associated with a single session of exercise.
A voucher is an internal document used in a company's accounts payable department in order to collect and organize the necessary documentation and approvals before paying a vendor invoice.
See also Voucher: an invoice is within the European union primarily legally defined by the EU VAT directive as an accounting voucher (to verify tax and VAT reporting) and secondly as a Civil law (common law) document.