So I recently started as a seasonal preloader. I arrive on time every day and work hard. I split at the front of the belt and load two trucks. My day job just informed me that they need me to travel for work for a week later this month. This is highly unusual, a one-off training thing, and won't be repeated. How should I address this with my supervisor? I like the UPS job and all indications are that I'd be kept on in January given my work ethic and desire to make preloading a long-term second job. I could push back against my day job employer, but at best, might be able to postpone my trip until January after UPS rush reason is over. How likely is it that I'd be jeopardizing my long-term opportunity at UPS if I had to leave town for a week during season (with the understanding it wouldn't happen again)?