Which of the following is incorrect regarding the extent to which public-sector workers' expressions are protected by the United States Constitution and the Bill of Rights? Multiple choice question. The First Amendment generally shields public-sector workers' off-the-job expressions when speaking as citizens about matters of public concern. Government employees' free speech rights are substantially limited on the job. Employer restrictions necessary to effective operation of a government enterprise may be permissible. The U.S. Constitution and the Bill of Rights do not protect public-sector employees