2x overtime means that one 16 hour day equals three 8 hour days. This is standard language among workers in the US who get paid overtime. It means you get paid

2x overtime means that one 16 hour day equals three 8 hour days. This is standard language among workers in the US who get paid overtime. It means you get paid 2x your hourly rate for each of your overtime hours. Also referred to as doubletime.