This bill requires federal agencies to submit detailed annual reports to Congress and post them publicly about "official time" — paid time that federal employees spend on union-related activities while at work. The reports must include the total cost to each agency, detailed explanations for each official time authorization, and specific information about individual employees who use official time, including their position, pay, hours spent on union activities, and what percentage of their work time this represents. Agencies must also report on any free or discounted use of agency property by labor organizations, the monetary value of such uses, reimbursements received, and expenses paid for union-related activities. Additionally, agencies must explain any year-over-year increases in official time authorizations. The bill affects all federal agencies and their employees, particularly those involved in union representation, and requires these transparency reports starting June 30 of the year following the bill's enactment.