What are the overtime pay rates?
For overtime work in excess of eight hours a day or 40 hours a week, employees eligible (that is, nonexempt) for overtime pay under the Fair Labor Standards Act generally are paid one and a half times their “regular rate” of basic pay. This includes basic pay, locality-based comparability payments, special salary rates, special law enforcement adjusted rate of pay, various forms of premium pay such as pay for Sunday, night, or holiday work, and hazardous/environmental differentials.

Those eligible for “Title 5” overtime are limited to the greater of one and one half times the hourly rate of a GS-10, step 1, or the hourly rate of their basic pay, whichever is greater.