2fast4u gave a pretty good answer,we have wild drivers that stay out for a couple of weeks,and others that rarely do layovers,especially at larger terminals they cover vacations,sick days,for bid drivers and extra runs to handle freight surges,generally the guys that stay out will have a higher yearly income because of steadier work,once you learn how to work the system even a first year driver that runs hard can make more than 65k in a year,a three year man(full wage)more than 80k.As for your workweek here's an example of my average week,when I ran wild, I'd usually start out on a thursday evening and head to Denver(521mi-8.25hrs)take a 10hr.break,then dispatch to Salt Lake(508mi-8.25hrs)take another 10hr break then head for Sacremento(635mi-10.75hrs)10 hours of rest then head for home on the same schedule,when I got back to Wichita usually the following tuesday for my 34 hr break I'd work a little less than 60hrs.and put almost 3300 miles under my wheels.