January 30, 2018 21:59 Updated Follow PERF, TRF and 1977 Fund employer participation forms can be accessed by visiting www.in.gov/inprs/employerforms.htm. Related articles I am an employer. How do I join the Public Employees’ Retirement Fund (PERF)? I am an employer. If my organization were to join the Public Employees’ Retirement Fund (PERF), when would the effective date be? Where can I review further information about my responsibilities as an employer and employee benefits?