It's very important for you, as a manager, to observe the various types of field work that your employees perform. I've seen many employees who misrepresent the difficulty of the jobs they're performing to serve their own convenience. On the other hand, you certainly don't want your employees to hurt themselves or others by attempting to perform a big job with no assistance. Unless you understand what's required to perform various types of jobs, you can't schedule your employees efficiently. Visiting jobsites also gives managers opportunities to meet with their customers.
Weather is a key factor in scheduling outdoor operations.
If you dispatch your crew in the morning without checking the weather report, you could pay for a lot of needless downtime. In a typical scenario, your crew loads its truck and drives through morning rush-hour traffic to the jobsite. Shortly after they arrive, a rainstorm hits. The crew sits in the truck for an hour, waiting for the rain to stop. The rain persists, and the foreman decides to return to the shop.