I've been late to work four times in the last two years.  Once due to my cars ignition locking up, once due to oversleeping (completely my fault), once due to fog that made 30 mph on the highway scary, & once due to all light rail service being shut down two stops before my work.
Other than that & calling in sick twice (once due to a car wreck, & once due to oral surgery), I have very, very good attendance.
Viper GTS