Excerpted from the Belgium Career Guide
Cover Letter Guidelines and Samples
A personalized letter of one page should always be included with the job application. This cover letter should be addressed to the person mentioned in the advertisement, and indicate his/her title.
Resume/CV Guidelines and Samples
In Belgium, a résumé/CV (curriculum vitae) is usually two pages in length, but may extend to a maximum of three pages depending on your experience. If sending an unsolicited application to an employment agency, you may wish to give more detailed information to fully describe your potential. If you are a recent graduate, concentrate on those studies, experiences and abilities that are most relevant. In any case, the résumé/CV and cover letter should be tailored to the job requirements.
You'll find more advice and cover letter and resume samples in the complete Belgium Guide.