Although the country you are applying to go to might have very positive things to say about the skills you might have, such as being an engineer or doctor, you are probably well advised to look further into actual experiences of past applicants.
There are many doctors, engineers etc who end up driving city taxicabs because they cannot get work due to the required training to do the work (that they are already trained for overseas) is too expensive.
An example of this is Canada, now, the rules keep changing, so you would have to check with current requirements, but the basic method is that you need a certain number of points to enter the country and work, and these points are awarded for various items in your life, such as education level, skills, etc. This is not to say that you will ever be able to have a position that uses those same skills, you just have to have them to enter, in order to score enough points.
Once in Canada, as a doctor for instance, you will have to undertake training that might be equal to a full doctors training with no credit given for being a doctor already, or the training is more likely to be partial, although from what I understand, many doctors from overseas are given so little credit for past experience, that they might as well accept that they will be spending many years in training in Canada, and that such training will be expensive to a degree that might make it impossible for them to pursue their chosen profession.
So, be careful, do the research.
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