In the United States the judges are nominated by the President with the "advice and consent" of the Senate. The Senate votes upon the President's nomination for approval or rejection.
They are elected.
Yes they can
The president does this job.
They have the job for life.
The primary job of the judges is to control the court of law to determine what penalties an offender should get. They can determine the amount of jail time a person may get.
They need a job and a salary.
Almost every Job
Superior and State Court judges are elected. Lower courts' judges (magistrate, juvenile, probate, etc) are appointed.
There are really no specific certifications or degrees that are required to obtain a warehouse supervisor job. One can simply get a warehouse job by having enough previous job experience.
Judges are not summoned in the course of normal events. They are appointed or elected to their positions. Judges are assigned to a court and sit whenever there are cases or matters they need to decide on. In many places that is a full time job.
There are many places to which one can obtain a business banking job. Many of the high street banks, including Barclays, Nationwide, Lloyds TSB and Halifax are all popular UK banks as to which one can obtain a banking job.
It depends on how well the judges do their job. Cheryl gets about £1.75,000,000 per series, but they haven't said about the other 3 judges. However, Simon gets paid more than the other judges and Dannii and Louis get less than Simon and Cheryl.