Wikipedia
Firing
Firing is the termination of employment by an employer. Though such a decision can be made by an employer for a variety of reasons, ranging from an economic downturn to performance-related problems on the part of the employee, being fired has a strong stigma in many cultures. To be fired, as opposed to quitting voluntarily (or being laid off), is often perceived as being the employees fault, and is therefore considered to be disgraceful and a sign of failure. Finding new employment may often be difficult after being fired, particularly if there is a history of being fired from previous jobs, if the reason for firing is for some serious infraction, or the employee did not hold the job very long. Job seekers will often not mention jobs that they were fired from on their resumes; accordingly, unexplained gaps in employment are often regarded as a red flag.
Usage
"Firing" is a common colloquial term in the English language (particularly used in the U.S.) for termination. It is also often known as being "dismissed", "sacked" (a term particularly used in countries from the old British Empire), "released", "discharged", "canned", "axed", "given walking papers", "let go", "relieved of duty", "boned", or "being given a pink slip". Most US states have adopted the at-will employment contract that allows the employer to dismiss employees without having to provide a justified reason for firing, although the variety of court cases that have come out of "at-will" dismissals have made such at-will contracts ambiguous. Often, an at-will termination is handled as a "layoff". Sometimes, an employee will be dismissed if an employer can find better employees than the incumbent, even if the fired employee has not technically broken any rules. This is common with probationary employees who were recently hired, but who cannot adjust to the environment of the workplace, or those who have been around for a long time, but can be replaced with a less experienced employee who can be p read more at » http://en.wikipedia.org/wiki/Firing