It is, however, dependent on total number of hours. (health.com)
Teachers usually work the same total number of hours at schools on a four - day schedule because between 60 to 90 minutes are added each day to keep the same instructional hours. (neatoday.org)
* Total recordable case rate is calculated by total recordable cases multiplied by 200,000 and dividing that by total number of hours worked. (IDFA.org)