- Pennsylvania Department of Labor & Industry www.dli.pa.gov
- Pennsylvania Employment & Labor Laws | PA Handbook www.employmentlawhandbook.com
- U.S. Department of Labor www.dol.gov
- Occupational Safety and Health Administration (OSHA) www.osha.gov
- The National Institute for Occupational Safety and Health (NIOSH) www.cdc.gov
- Mind Tools: Management Training and Leadership Training, Online www.mindtools.com
