The reality series follows the single parent and abstinence spokesperson as she attempts to navigate motherhood and a professional career.
Deadline reports that talent manager Stephen Hanks has launched a lawsuit against Palin for the second time, claiming defamation and invasion of privacy.
Hanks filed his first case against Palin earlier this month, demanding $75,000 from Lifetime and Palin, after he had a verbal confrontation with the TV star that was allegedly taped for her show without his permission.
In the new suit - launched against Palin, Lifetime's parent company A&E Television Network, and Life's a Tripp producer David McKenzie - Hanks is demanding unspecified compensation for punitive damages and emotional distress.
This new suit is the latest blow for the reality show, which premiered to dismal numbers on June 19 and was recently moved from Lifetime's primetime schedule.
Palin has yet to comment publicly on the issue.