Michelle Obama's staff consisted of 18 employees who got paid nearly $1.5 million in salary in 2010, according to the administration's Annual Report to Congress on White House Staff.
According to the June 2017 report to Congress on White House personnel, First Lady Melania Trump maintains a significantly smaller staff than her predecessor, Michelle Obama. As of June 2017, only four people were listed as working directly for First Lady Trump for a total combined annual salary of $486,700.
https://www.thoughtco.com/michelle-obamas-staff-3322113