[Those who volunteered their interest some time ago have likely already worked a number of shifts at the community farm – a merge between Charming's old farm and newly-planted crops. By now you should know your tasks and when you're expected to be finished with them – if not, Sebastian will remind you.
Or maybe Yukine will! These last few weeks it's been Yukine who's drawn up the communal schedule for the week, distributed the work tasks to the volunteers, and followed up on their progress – with some background support from Sebastian, that is. Almost cute, isn't it, the two of them suddenly doing projects together.
There are plenty of tasks to choose from! When you let an overambitious workaholic plan your farm, you end up with three dozen different plants. Carrots, potatoes, legumes, various berries, tomatoes… you get the idea.
Maybe your task of the day is harvesting the earliest berries? Re-planting sprouting seeds properly into the ground or into larger pots? Watering the plants? Weeding? Maybe you're strong enough to haul several sacks of soil at once. There is a substantially sized herb garden – perhaps you're more suited to the delicate work of tending to those seeds?
Basically, invent your own task. Or eat the harvest prematurely (don't do this: Sebastian will implode). Or get distracted during your shift. Or come ask to be part of the fun.
Making out with your various significant others doesn't qualify as an acceptable reason for not finishing your work on time, by the way.]