If you want to leave your current job to switch employers, make sure you do so with not only your best interest in mind, but your current employer’s too. This is necessary even if you are unhappy with your current employer.
No call/no show quitting is not an admirable way to leave a position. When employers are considering you for a position and hear from a previous employer you walked out on your job, well they may move on to the next candidate. They have a business or office to run and need people who are reliable. If you left a job without telling your previous employer, you may be deemed as unreliable, therefore the new employer may over look you despite the reasons you had when leaving.
Give two weeks notice or more in some cases. If you are in a position that you realistically know they can not replace you with in two weeks, consider working out with your new employer giving your current employer an extra week or two. The new employer will realize that this is a courtesy that you may extend to them in the future and will admire that quality.
Do not bash your supervisor or coworkers when you quit. If you are leaving because you are unhappy in your work environment, then explain to your employer what it is you are unhappy about in detail. However, do not make derogatory statements about others. It will make it appear as though you are quitting because you are mad at them directly, and in turn it may not put you on the top of their list for rehire in the future. If you have problems with the work environment when leaving – avoid pointing fingers. An example would be, “I am quitting because John is a disorganized pig.” Instead, a better thing to say would be more like, “I feel as though this area is not as efficient as it could be and if it were more organized it would be more productive.”
When resigning, put the notice in writing and then arrange to sit down with your supervisor. A kindly written letter can be misinterpreted when the person reading the letter is upset or distracted. Perhaps your employer is sad to see you go, or even surprised. In which case, when reading your letter they will not be thorough. Avoid making the letter more than two paragraphs. Sit down with your boss and explain that you have been happy working there, and that you will miss the position but have found an opportunity you could not refuse.
Once you have given your notice, work on any older projects and organizing your work area. Once when I quit my position, for a period of one week I wrote down every step it took to complete specific tasks. By doing this, when someone replaces you or is trying to complete your tasks after you have left, you are leaving them a guideline and assisting them. In turn, when my situation had changed, my employer not only rehired me but hired me in a higher position with a much better salary.
Keep in touch with your past coworkers and supervisors. Remember, just as you were looking to move up, they are too. You never know when your paths will cross again or when you may need their assistance professionally. If you leave them on good terms, you will find they have much knowledge such as how to supervise staffs and deal with difficult employers/employees that they would be willing to share with you to help you succeed.