grab the 50 grand, and flee the country with it

Usually sign on bonuses are broken out over a period of time, you'd receive say 25% in your first paycheck, 25% after 3 months, 25% after 6 months and the last 25% after 12 months. Or in my wife's case when she took a CNA role in 2021 she got $1k in the first paycheck, $1k after 3 months and the last $1k after 6 months for her $3k sign on bonus