A promotion is the advancement of an employee's rank or position in an organizational hierarchy system. Promotion may be an employee's reward for good performance, i.e., positive appraisal. Before a company promotes an employee to a particular position it might ensure that the person is able to handle the added responsibilities by screening the employee with interviews and tests and giving them training or on-the-job experience. A promotion can involve advancement in terms of designation, salary and benefits, and in some organizations the type of job activities may change a great deal. The opposite of a promotion is a demotion. Elements A promotion involve advancement in terms of designation, salary and benefits, and in some organizations the type of job activities may change a great deal. In many companies and public service organizations, more senior positions have a different title: an analyst who is promoted becomes a "principal analyst"; an economist becomes a "senior economist"; or an associate professor becomes a "full professor". The amount of salary increase associated with a promotion varies a great deal between industries and sectors, and depending on what parts of the hierarchical ladder an employee is moving between. In some industries or sectors, there may be only a modest increase in salary for a promotions; in other fields, a promotion may substantially increase an employee's salary. The same is true with benefits and other privileges; in some industries, the promotion only changes the title and salary, and there are no additional benefits or privileges (beyond the psycho-social benefits that may accrue to the individual). In some not-for-profit organizations, the values of the organization or the tightness of funding may result in there being only modest salary increases associated with a promotion. In other industries, especially in private sector companies, a promotion to senior management may carry a number of benefits, such as employee stock options, a reserved parking space, a corner office with a secretary, and bonus pay for good performance. The degree to which job activities change varies between industries and sectors. In some fields, even after an employee is promoted, they continue to do similar work. For example, a policy analyst in the federal government who is promoted to the post of senior policy analyst will continue to do similar tasks such as writing briefing notes and carrying out policy research. The differences may be in the complexity of the files that