This wheel of yearly occupations in the linked graphics looks like it owes something to contemporary medieval motifs of the year's tasks in agriculture, as depicted in art -- the very idea of ordering works of the year by when in the year they were generally performed would not have been unfamiliar to medieval farmers, even if they weren't generally the people commissioning grand-scale works of art. The labors of the months were linked to the ordering of the year, both in a cosmic sense tied to the zodiac and the rhythms of man's toil ("by the sweat of your brow, you shall have bread" -- or I guess in a Middle English context, "in swoot of thi cheer thou schalt ete thi breed") and a practical sense documenting and transmitting the sequence of the year's work. The traditional labors by month aren't exclusive to Christian works either -- there's a zodiac-linked set of labors of the months in the Tripartite Mahzor, a 14th century Jewish prayer book,, for instance. I like the Trinity College Cambridge blog's overview of the labors of the months as depicted in their manuscript collection; they roughly match onto the tasks displayed in the circular graphic, though the most conspicuous difference is that butchering of animals (including fattened swine) might be an activity associated with October and November, or November and December, rather than being restricted to November alone. (I also doubt that women spun and wove only during October -- the other tasks depicted follow the rhythms of agriculture, ploughing being followed by sowing being followed by reaping, or pigs being fattened followed by pigs being slaughtered and their meat being preserved, but textile-work was more dependent on access to fibers and fiber processing like dyeing and spinning which are slightly less time-sensitive than the handling of perishable goods.) These labors depict the broad cycle of rural labor, rather than a strict schedule, and their artistic/literary depictions may be more fanciful than strictly documenting the real sequence and division of labor.

The most famous instance of this cycle might be that from the Très Riches Heures du Duc de Berry, illustrated by the Limbourg brothers. The Heures' illustrations show French peasants hiding out indoors for February; they're absent from the January scene, which shows a feast. They are shown ploughing and sowing in March as well as pruning trees; in June the peasants are harvesting, in July they're still harvesting but also shearing their sheep. In August, they're still harvesting, in September they harvest grapes, in October they're tilling their fields, in November they're harvesting acorns for their swine in preparation for the unseen butchering in December and perhaps in January. There's a few noticeable seasonal omissions here, usually when the Limbourg brothers wanted to show something that didn't allow for the inclusion of peasants at work even in the background, but there's a rough correspondence with the year in labor as generally understood/the year in labor as depicted in the circular graphic, and the architectural landmarks shown (the holdings of the Limbourgs' patrons) help situate these labors geographically within France.