If you were in a social situation, you would not go up to a person and start talking to him or her without introducing yourself. The same is true of applying for a position. Unless a position advertisement tells you to skip the cover letter, make sure you tell the reader who you are and why you are applying in an introductory cover letter.
A cover letter is not a regurgitation of what is on your curriculum vitae or resume. That is why so many potential employers may skip reading the cover letter unless they asked you to list specific information in it such as salary history or availability for work. However, you can grab your reader’s attention by making a bold statement in the first line of your cover letter. Instead of just listing the job for which you are applying and the fact that you are interested in it, tell the reader why the position is important to you. What piqued your interest enough about this position that you are taking time to apply for it?
The second paragraph of the cover letter should outline how your skill sets allow you to make a difference, to be successful in this position. What makes you the best person for this job? It cannot just be experience. Everyone else applying for the position should have relevant experience too. Your experience is already listed on your resume. How can you use your experience in a way to help this company or organization. Will it increase their bottom line, help them to be in compliance, see that they are more efficient?
Lastly, close with a statement on your desire to meet the employer to talk further about the position. Your interest should show strongly in every statement that you make in your cover letter so that an employer will feel obligated to talk to you, as if he may be missing out on the best candidate for the position if he does not interview you.