default for filter

Not in the filter directly, no. The alternative would be remove the ability to select the filter by these users and instead add a filter into each report based on the job they're currently clocked into. The dashboard would then always display that job until they clock out or clock into a new one, they wouldn't be able to navigate the data between jobs on this page at least. You could add another report that shows what job they're currently clocked into as well to make it obvious