Recently, Element Electronics laid off $40\%$ of its staff. However, Element Electronics did not give notice of the layoffs to these employees, let them go on the spot. Which act did Element Electronics likely violate in this example, which may result in having to pay fines as well as all employees that were terminated?

Multiple Choice

Fair Labor Standards Act

Employee Free Choice Act

Davis$-$Bacon Act

Right$-$to$-$Work Act

Workers' Adjustment Retraining and Notification Act