We often hear stories on how hard it is to start a business in France. As a French, I'd like to hear how easy it is in other countries (UK, US?). For example, what are the costs, the amount of paperwork...
Employing people: https://www.gov.uk/employing-staff (register with tax office, pay 13.8% of their pay over £166/w as national insurance. Very small employers don't have to register with PAYE: https://www.gov.uk/paye-for-employers
Usually you delegate that to some company like Sage.
Giving them shares or share options is potentially much more complicated, but by that point you'll retain an accountant for the purpose.
The big nightmares are visas (of any kind) and bank accounts. Small business banking doesn't have "consumer protection", and can come with all sorts of fees and predatory lending practices.