Discuss the below:
Q: General Dynamics and the United Auto Workers entered into a new contract that eliminated full health benefits for retirees under the age of 50. Before that, General Dynamics had to provide full health insurance for all retired employees who had 30 years of seniority. A class of employees aged 40-49 sued, arguing that the ADEA prohibited a loss of benefits based solely on age. Are they correct? Explain.