Final answer:
Worker's Compensation is the program that covers healthcare costs and lost income from work-related injuries or illness of federal government employees.
Step-by-step explanation:
The program that covers healthcare costs and lost income from work-related injuries or illness of federal government employees is Worker's Compensation.
Worker's compensation is a type of insurance that employers are required by law to pay into funds, typically run at the state level. It provides benefits to employees who suffer an injury on the job, including coverage for medical expenses, disability benefits, and lost wages.
This program ensures that federal government employees are protected financially and receive necessary medical care when they experience work-related injuries or illnesses.