Hiring a mercenary is easy when you have enough money to finance the process. Many countries do hire mercenaries to fight for them, and a lot of them seek the help of mercenaries. An important factor that causes countries to hire mercenaries is when the country is considered a military hotspot, which can be the cause of hiring mercenaries in the past.
In 1989, after the ban that was placed on mercenaries training, use, and hiring, most of the countries and individuals today had stopped hiring mercenaries because of the punishment attached to the law.
Some of the countries where mercenaries are still hired to include Colombia, Afghanistan, and Iraq. Lastly, other individuals hiring mercenaries are doing it in secret and want to get something done without involving the government or military.