The State Department periodically issues reports on Oman on a variety of topics, including human rights, trafficking in persons, and others:

Human Rights Report:

http://www.state.gov/documents/organization/253153.pdf (128 KB)

Trafficking in Persons Report:

http://www.state.gov/documents/organization/258876.pdf (24.3 MB)

Country Report on Terrorism:

https://www.state.gov/j/ct/rls/crt/2017/282844.htm 

International Religious Freedom Report:

http://www.state.gov/j/drl/rls/irf/religiousfreedom/index.htm?year=2015&dlid=256283