It's really not that simple. For example in france the government takes income tax and other social contributions directly from the paycheck. As the employer, it is your reponsibility to pay the french government some corporate tax on top of those taxes, you can't make the employee pay them for you. A solution would be paying directly a french company, for example one that the employee ows (as a self-entrepeneur, for example), but you can't ask that of potential hires. Of course, it's "easy" and well documented so you can figure it out for france, but you can't spend that much time doing that for every country especially when dealing with countries that are much less internationaly navigable.
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It's really not that simple. For example in france the government takes income tax and other social contributions directly from the paycheck. As the employer, it is your reponsibility to pay the french government some corporate tax on top of those taxes, you can't make the employee pay them for you. A solution would be paying directly a french company, for example one that the employee ows (as a self-entrepeneur, for example), but you can't ask that of potential hires. Of course, it's "easy" and well documented so you can figure it out for france, but you can't spend that much time doing that for every country especially when dealing with countries that are much less internationaly navigable.