In the U.S. it varies from state to state because of different labor laws. Most states if you go by the letter of the law the tech is supossed to start getting paid the minute his but hits the seat in the morning and when he gets out in the evening.

Common practice on the other hand is an agreement is made with the tech that they give up the average amount of time it would take to drive from their house to the shop and the same on the way home. The reason being, if the employer wanted to, they would just leave the vans at the shop and make the techs drive their personal vehicle back and forth to the shop. Then pick up and drop off the van at the shop every morning and evening.

There are many industries in my area like plumbers, air conditioning repair, cable television techs in my area that have to pick up their vans in the morning, but all of the lift truck companies in my area allow the techs to take the vans home.