Employees across the massive U.S. Health and Human Services Department have begun receiving notices of dismissal in an overhaul ultimately expected to lay off up to 10,000 people. The notices came Tuesday just days after President Donald Trump moved to strip workers of their collective bargaining rights at HHS and other agencies. Health Secretary Robert F. Kennedy Jr. announced a plan last week to remake the department, which, through its agencies, is responsible for tracking health trends and disease outbreaks, conducting and funding medical research, monitoring the safety of food and medicine, and administering many health insurance programs.