You can increase after your boss nod head. All the best.
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Sorry, your question is not clear. Salary increase need to be given by the co/management. If you want to request for an increase, you can do so by providing your justification. Depending on co policy, management may consider to increase it.
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Yes Can. Improve your performance and be top performer.
Sure when Performance Appraisal you got Excellent and got highest Salary Increase