Does an agent take care of customs ppwk for example if you're doing a cross border load?
The customer prepares international shipment paperwork and uses a customs broker (usually). We deal with the brokers directly. If an ACE manifest is needed, we make a phone call to Landstar and one is immediately faxed or e-mailed to the truck (we have in-truck fax and e-mail capability).
Border crossing became simpler when we moved to Landstar where we gained the ability to deal directly with the parties concerned, and the people who dispatch our freight (agents) know better than to inject themselves between the truck and the broker.
Why should an agent deal with border crossing issues on a weekend when the driver can resolve them as well as anyone and the agent can be playing golf instead?
Diane and I once had occasion to wake an agent up in the middle of the night with a border crossing issue. He was the right person to call since he was also the one who set up the shipment and knew how to get ahold of the customer, also in the middle of the night. Unlike our previous carrier, he did not wait for business hours. Rather than stranding us at the border overnight, he called the customer at home and got the needed information.
This approach means more work for us but it also means a decreased likelihood that we will be stranded at the border because of a paperwork snafu or dispatch dropped the ball (and then tells you it's the broker's fault).
Landstar, a huge carrier, has a Canada help desk that we can call if we have questions. It is staffed during regular business hours. We made use of that resource a couple of times early on but once your questions are answered and you get the hang of international border crossings, you remember the answers and don't need to call again.