Skills training programs are important to everyone and there is no doubt about it. And this is regardless of what field you may be in or whether or not you already have a job and regardless of what post you may be in. However, the kind of skills training that you may require would vary a great deal which would obviously depend upon your existing skill levels as well as your position within the company that you may be employed with.
For those who are unemployed, the kind of skills that they require are usually those directed at allowing them to market and sell their skills to employers who may have a need for them. Jobs are often as easy to get as you can market your skills to your interviewer which is why you'll find the vast majority of people who fail to secure a job following an interview is not because of lacking the required level of education but because they can simply not market their skills in a professional manner.
And this is basically what a skills training program would help you with as it will enhance your skills together with allowing you to improve your knowledge and experience in certain fields that may be of interest to you. Different countries have come up with their own skills training programs to help the unemployed get back to employment and if you check what Spain has then you will find that INEM as featured on sites like cursosinem tends to be the most popular training program that is on offer to people looking to get back to work.