Rainer is the founder or co-founder of the following nonprofit corporations and projects:

• The Worldwide Help Alliance Team, Inc., formerly known as North American Help Services Alliance, Inc, a 501(C)(3)nonprofit corporation, Hudson, New Hampshire, and Orlando, Florida.

• The Hotline Directory

• StompOut Tobacco

• HelpUnited

• PostICU, Inc., a 501(C)(3) nonprofit corporation, Corvallis, Oregon.

• AfterICU, a patient-centric project at Brigham & Women’s Hospital, Boston, Massachusetts.

• Abuse Victim Hotline, Inc., a 501(C)(3) nonprofit corporation, Revere, Massachusetts

He was the founder or co-founder of the following businesses;

• Rainer & Rainer, PC Attorneys at Law, Boston, Revere, New Bedford, Dorchester, Massachusetts.

• Rainer Agency, Inc., Boston, Revere, Medford, Massachusetts, and Atkinson, New Hampshire.

• The Social Security Advocates, LLC, Revere, and Medford, Massachusetts.

• The Social Security Lawyers of America, LLC. Revere, Massachusetts.

• Citizens Disability, LLC, Medford and Waltham, Massachusetts

• MobileLawUSA, Inc., Revere, Massachusetts

• BumOne, Inc., Hudson, New Hampshire

• Hashtag Dialing Codes, LLC Revere, Massachusetts, and Hudson, New Hampshire

• Hashtag Codes Advertising Agency

• Hashtag 4Law, Revere, Massachusetts, and Hudson, New Hampshire

• Hashtag 4Help, Revere, Massachusetts, and Hudson, New Hampshire

• DirectDial, Revere, Massachusetts, and Hudson, New Hampshire

• TheSSDI Project, Revere, Massachusetts, and Hudson, New Hampshire

• TextMeLawyer, Revere, Massachusetts, and Hudson, New Hampshire

• USA Outdoor Sports, Inc., Hudson, New Hampshire.

• Panther E-Bikes, a division of USA Outdoor Sports, Hudson, New Hampshire.

Some of the awards won by Rainer, include:

• New England Arm Wrestling Champion, 175 lbs and under, 1984

• Constitutional Book Award, Law School, 1986

• The 25 Most Influential Lawyers of the Past Quarter Century, Massachusetts Lawyers Weekly, 1998

• Heroes Among Us, Boston Celtics Award, 2008

• Teaching Excellence Award, the Accreditation Council for Business Schools and Programs, July 2020