Guilds
The guilds of Estel Úqua are international organizations that provide opportunities to their members regardless of race, religion, or home country. Becoming a member of a guild usually requires a certain level of skill, and may frequently require a test of that skill. While characters of PCs may not start out as a member of a guild, you can certainly try to join one in game (characters of primary NPCs may be part of a guild with Ms. Hale's prior approval).
Mercenary's Association
Providing members access to full wages for battle work and front line access to high paying jobs, membership in the Mercenary's guild is a fighter's dream. Sure, you can work king's guard or the city watch like anyone else, or you can join the guild and take on bigger prizes like escorting merchants around the globe or fighting off the occasional horde of creatures from the wild lands and make in a month what you would have made in a year back in the guard.
Smithy and Miner's Union
The union guarantees it's members access to forges across the globe and cut-rate discounts on precious ore. For many craftsmen, this guild also provides an essential marketplace to sell their wares outside of the community in which they live and work.
International Sorcerer's Society
From the hallowed halls of the Elven empire's renown academies to the small cottage of the village Sorcerer, all locations that harbor a rebirth circle are considered part of the Society. All magic users are considered to belong as well, although all casters are not regarded equally. Many would say that the Society only exists to stoke the ego of the most powerful sorcerers, while others would say it provides a vital connection to learn and grow in their art. Ultimately, the International Sorcery's Society is responsible for protecting the world's rebirth circles and guiding people through.
Fellowship of the Healing Arts
For Druids and Clerics whose work focuses on healing, membership in the Fellowship of the Healing Arts can be sought. Among its benefits is a safe haven in many towns where sleep and food can be found for free, and stocks of herbs for potions and spells that members may access. Membership comes at a cost, though, as you may be called upon to heal those in need that you might not wish to heal, or be conscripted into battle. That, along with the brewing feud between the Fellowship and the International Sorcerer's Society, makes many healers leery of joining the Fellowship.
Merchant's Cooperative
The Merchant's Cooperative is the backbone of society and industrialization. The network spans all countries but the Wild Lands, and even boasts a couple of outposts in Knacuria, which is known for it's resistance to outsider colonization. The wealth and power they accumulate sways countries, although there are those who would say that it also brings darkness and harbors thieves and liars.