Do I need to include a cover letter with a job application ?

Sometimes a job applicant thinks a cover letter is unnecessary or optional. This is never the case! Human resource managers often screen job applicants by their cover letters and cover letter content as much as they do by the resume itself. In fact, not writing a cover letter can be a fatal mistake that gets your resume tossed without further consideration. Many job hunters think that when applying electronically there is no need for a cover letter. This is false, as applying electronically should be no different than any other form of applying.
A well written cover letter should go out with any resume that is sent to apply for a job. It should be tailored to match the job advertisement and personally addressed if the HR manager or other person responsible for hiring is known. The first paragraph should be a powerful opener that tells the background, strengths, skills, and accomplishments of a job applicant. A good cover letter also reveals communication skills and ability to interact in the business environment, a selling point.