I'm in the UK. I'd not considered it could be an issue tbh. I'm not intending to employ people. Google and others manage to pay amounts to advertisers I assume without these hassles. I'm not at my pc atm to investigate that further right now.
In the case of my country in Eastern Europe these laws are so tight that they require either: - the independent contractor to be officially registered with the governmental authorities and authorized as such, or - to be considered as an employee, which has to sign with the business a paper contract that also has to be registered with the authorities, and for which social security and medical taxes must be paid.
This makes impossible running in my country a business based on the model that you are also interested in.
Could you discuss what the law allows in UK, Ireland, Cyprus or other European country?