An MBA automatically places an employee or job applicant a cut above one who holds only a bachelor's degree. MBA graduates, on average, earn twice as much as business majors, with a median figure of around $105,000 per annum.
That having been said, MBAs are no longer the gold standard they used to be. The job market is somewhat flooded with graduates, so such a diploma is not necessarily a guarantee of upward mobility. This degree does, however, remain a basic requirement for certain jobs, including many in top management and the investment ecosystem.
It also matters where you obtained your MBA. The vast majority of courses are of a very high standard, but one from Harvard is naturally going to carry more weight than the equivalent from the University of the Bahamas. Outside the United States, the best institutions are found in Britain, Spain, Germany, and France. Most have an English-language version of their MBA programs and many allow you to do an "executive" course, namely one that's pursued part-time and mostly online.
Employers don't seem to make a strong distinction between executive and on-campus MBAs. There is one very important point to keep in mind, though: many graduates have found that the most important benefit of their MBAs is not the knowledge they gained or the bullet point on their resumes, but the contacts they made among future business leaders. With an online course, your opportunities for networking with your classmates will be limited.