Welcome to Gaia! ::

So you'd like to work in the commerce world eh? That means that you'll likely find some employment in Diagon Alley, Knockturn Alley, or in one of the various villages around schools. Before you decide that you're definitely shop-keep material, you might want to think about the following.

Job Availability
If you want to purchase or work in a shop,in Diagon Alley you're going to want to look here. Don't see a shop that suits your fancy? You could try to pitch an idea for your own original shop. Or perhaps that's a sign that this isn't the job for you.

If you're of a darker or more adventurous variety, the same holds true in Knockturn Alley

Requirements
While certain shops may require you to have a certain sort of knowledge, such as a Pub needing employees knowledgeable in the culinary arts, there is no O.W.L. requirement or N.E.W.T. requirement.

Living Quarters
No matter where you set up shop, you'll be living on the second floor of your workplace. At least, for owners that is. Assistants will have to make other arrangements or commute to work from elsewhere.

Pricing
While you may not sell goods for Gaia Gold, you can sell them for some galleons, sickles, and knuts. For a good idea on pricing, check out this fancy page.

The Department of Magical Law Enforcement is the largest department at the Ministry of Magic. Arguably the most important of the various departments, it is a combination of police and justice facilities, and is roughly the equivalent to the Home Office of Muggle Britain or the Department of Justice in the United States. All other departments are answerable to this one, with the exception of the Department of Mysteries.. All of these jobs have an age requirement of at least 17 years.

Auror
Requirements: Minimum Grade of E on at least five N.E.W.T.s in challenging subjects such as Potions, Defence Against the Dark Arts, Transfiguration, Charms, and Herbology. Doing well on character and aptitude tests. Clean criminal record. Completion of training.
Description: The wizard equivalent of police and military, Aurors are trained to investigate crimes concerning the Dark Arts as well as to apprehend and/or detain Dark Wizards.

Witch Watcher
Requirements: Two N.E.W.T.s, one in Charms and one in Defense Against the Dark Arts.
Description: Stationed at strategic points in the wizarding world to search for, and aid in apprehending fugitives.

Hit Wizard
Requirements: Five N.E.W.T.s including Defense Against the Dark Arts
Description: Arrests dangerous criminals.

Hogwarts School Governor
Requirements: Seven N.E.W.T.s
Description: A group of twelve witches and wizards who oversee the running of Hogwarts School of Witchcraft and Wizardry. They have the ability to appoint and suspend a headmaster and are obliged to take action if a parent seeks redress on any school related issues. They may also shut down Hogwarts if they feel it is necessary.

Department of Magical Equipment Control.
Requirements: a N.E.W.T. in Charms
Description: Responsible for the regulation and standardization of magical equipment and detection of sellers of substandard equipment.

Department of Intoxicating Substances
Requirements: You will have to learn how to tell when an underaged witch or wizard is drunk and know how to take them into custody.
Description: Makes regulations on the consumption of alcoholic beverages.

Wizengamot Administration
Requirements: Learning how the court works and sorting paperwork
Description: Similar to Muggle Court registries, this department deals with the maintenance of court documents, hearing dates, judges' schedules,

Office for the Detection and Confiscation of Counterfeit Defensive Spells and Protective Objects

Requirements: N.E.W.T.s in Charms and Defense Against the Dark Arts
Description: Confiscates fake protective spells and

Misuse of Muggle Artefacts Office
Requirements: Two N.E.W.T.s in Charms and Muggle Studies
Description: Regulates use of magic on Muggle objects and tries to keep bewitched items away from Muggles. Keeps Dark Magic items out of circulation.

Improper Use of Magic Office
Requirements: N.E.W.T.s in Charms and Transfiguration
Description: Investigates violations of the Decree for the Reasonable Restriction of Underage Sorcery and International Statute of Wizarding Secrecy. The Animagus Registry is posted here.

Magical Law Enforcement Patrol
Requirements: N.E.W.T.s in Defense Against the Dark Arts and Charms.
Description: Enforces general laws

The Department for the Regulation and Control of Magical Creatures is the second largest Department in the Ministry of Magic. It is divided into three divisions named after the three categorisations of magical creatures: Being, Beast and Spirit. It also houses the liaison offices for Goblins and Centaurs. All of these jobs have an age requirement of at least 17 years.

Goblin Liason
Requirements:
Description: Takes care of magic economy and wizard-goblin relations.

Werewolf Support Service
Requirements: N.E.W.T.s in Care of Magical Creatures and Defense Against the Dark Arts, Patience
Description: Offers aid to those afflicted with lycanthropy

Dragon Research and Restraint Bureau
Requirements: N.E.W.T.s in Care of Magical Creatures and Defense Against the Dark Arts
Description: Responsible for all dragon-related services.

Werewolf Capture Unit
Requirements: N.E.W.T.s in Care of Magical Creatures, Defense Against the Dark Arts, and Charms
Description: Captures werewolves deemed to be a threat

Pest Sub-Division
Requirements: N.E.W.T.s in Charms and Care of Magical Creatures
Description: Deals with infestations of magical pests.

Poltergeist Unit
Requirements: N.E.W.T.s in Ghost Studies, Defense Against the Dark Arts, and Charms
Description: Captures poltergeist that pose a serious threat to wizards, witches and Muggles. Removes poltergeists from Muggle residences.

Office for House-Elf Relocation
Requirements: N.E.W.T. in Care of Magical Creatures
Description: Allocates and reassigns house-elves.

Werewolf Registry
Requirements: Able to sort and file paperwork
Description: Maintains the werewolf register. Werewolves may freely register unless caught. Then they are required to register.

Ghoul Task Force
Requirements: N.E.W.T.s in Ghoul Studies and Defense Against the Dark Arts.
Description: Investigates when ghouls move into residential areas and become a problem for the inhabitants.

Committee for the Disposal of Dangerous Magical Creatures
Requirements: N.E.W.T in Care of Magical Creatures
Description: Executes magical creatures deemed to be a threat to the wizarding world

Centaur Liaison Office
Requirements: N.E.W.T in Care of Magical Creatures
Description: Deals with wizard-centaur relations. Hardly any centaurs use the office.

The Department of Magical Transportation is responsible for various aspects of magical transport. All of these jobs have an age requirement of at least 17 years.

Floo Network Authority
Requirements:
Description: Maintains and regulates the Floo Network. Have the power to monitor and observe Floo Network Connections and may eavesdrop on conversations held through the Floo Network.

Knight Bus
Requirements:
Description: A triple-decker, purple bus that picks up standed witches and wizards.

Apparation Test Centre
Requirements: N.E.W.T. in Apparation
Description: Grants apparaition licenses to qualified witches and wizards

Portkey Office
Requirements:
Description: Regulates and authorizes objects to be turned into portkeys. Monitors the way in which they are used.

Broom Regulatory Control
Requirements:
Description: Determines what factors allows an individual to use and ride a broom. If a broom is determined to be dangerous or tampered with, this office will confiscate it.

This is where all witches and wizards arrive at the Ministry using a few methods of transportation to get here: using the external entrance (an unused telephone booth) or arriving via Floo by a series of gilded fireplaces lining the left-hand side of the long hallway leading into the Atrium proper. All of these jobs have an age requirement of at least 17 years.

Lobby Receptionist
Requirements: Friendly, willing to work with people, point out where things are
Description: Help visitors figure out where they need to go.

Security Desk
Requirements: Be a part of the Magical Law Enforcement Patrol
Description: Registers visitors wands.

Magical Maintenance Office
Requirements: O.W.L. in Charms
Description: Maintains the Ministry, including deciding what weather will be displayed out the windows, repairing magic gone wrong, and operating the lifts.

The Wizengamot is wizarding Britain's high court of law and parliament. It may be a continuation of the old Wizards' Council. Its administrative headquarters is located in the Department of Magical Law Enforcement of the Ministry of Magic. At least some of its trials take place in the dungeons of the lower levels. The Wizengamot appears to act as a form of parliament: the various Educational Decrees introduced by Minister for Magic Cornelius Fudge in 1995 were passed and sanctioned by the Wizengamot. Similarly, Muggle laws in Great Britain must be agreed to by Parliament. It is unstated how much control the Wizengamot has over passing these decrees, and how much control the Minister exercises in such circumstances. These courtrooms are where wizards and witches are put on trial by the Wizengamot. These courtrooms were used during the First Wizarding War, for judging Death Eaters. There is a hallway leading from the Department of Mysteries, which leads to a stairwell leading to the courtrooms. All of these jobs have an age requirement of at least 17 years.

Minister for Magic
Requirements: Six N.E.W.T.s including Defense Against the Dark Arts and Charms, two years working in another division
Description: Leads wizarding world in the United Kingdom, highest ranking member of the Ministry of Magic, controls Ministry of Magic, passes wizarding laws, hears important trials,

Senior Undersecretary to the Minister
Requirements: Six N.E.W.T.s including Defense Against the Dark Arts and Charms, two years working in another division
Description: Acts as second in command to the Minister for Magic

Chief Warlock of the Wizengamot
Requirements: Six N.E.W.T.s including Defense Against the Dark Arts and Charms, two years working in another division
Description: Presides over the Wizengamot, overseeing court proceedures

Court Scribe
Requirements: Six N.E.W.T.s including Defense Against the Dark Arts and Charms, two years working in another division
Description: Keeps a verbatim transcription of hearings, fetches extra chairs, lets witnesses in.

For information, please read this thread.