Am I required to telework during a delayed arrival announcement from OPM?

NIH cannot require you to telework when OPM announces a delayed arrival announcement.

Telework should always be voluntary during these particular announcements and employees will be given the opportunity to perform unscheduled telework, take leave, use a combination of the two, or report to the official worksite. If you are approved to use unscheduled telework versus report to the worksite, you should work the entire day.