Mandatory overtime is available for employers if they have four or more employees. Illinois requires payment at timeandahalf for work that goes beyond 40 hours per workweek.The FLSA states that all nonexempt employees are entitled to overtime pay for working over 40 hours in a workweek. Learn about rules and regulations for pay beyond 8 hours, and stay compliant. The Fair Labor Standards Act (FLSA) requires most employers to give nonexempt employees overtime pay when they work extra hours. Overtime pay rate: At least 1.5 times the regular rate of pay for hours worked beyond 40 in a workweek. The Fair Labor Standards Act (FLSA) states that any work over 40 hours in a 168 hour period is counted as overtime. Overtime wages are 1.5 times an employee's regular pay rate for each hour worked over 40 in a workweek. Overtime pay at a rate not less than one and one-half times the regular rate of pay is required after 40 hours of work in a workweek. In the U.S., the Fair Labor Standards Act (FLSA) oversees federal overtime laws.