Going to work –If one began working before dawn, one is not obligated to stop, as long as there will remain enough time to finish saying krias shema and shmoneh esrei before the zman passes. However, if one began after dawn, one must stop to recite krias shema, but one does not need to stop for shmoneh esrei as long as the zman won’t passs. In this scenerio, after work one should repeat krias shema with the Brachos before saying shmoneh esrei.