With all the work at home opportunities advertised today, it can be difficult to pick out the true jobs from the scams. Here are some tips that will help you determine whether a job is legitimate or a scam in just minutes.Do they charge a fee? If so, it is a scam. A legitimate company will not charge you to work for them. Period. Occasionally, you will come across companies that charge for training, but most often they will deduct the cost from your first few paychecks. This is rare, however. M.