“Integrity has no need of rules.” Albert Camus. There is no question that paying a testifying witness a contingent fee based on the outcome of the case is prohibited. But such evidence is not excluded per se. The court of appeals came to that conclusion because trial courts have discretion to admit testimony generally. Next, the court of appeals determined that the paid witness was properly permitted to summarize evidence already admitted into the record without violating CRE 602. Similarly, the witness’s summary exhibits were properly admitted, again because they were based on admitted evidence. Moving on, it held that a nonparty at fault could not be designated based on vicarious liability alone. The court then upheld the trial court’s decisions 1) to deny a directed verdict on a fraud claim and the economic loss rule and, 2) found a CRE 701 objection was not preserved for appeal.
http://www.courts.state.co.us/Courts/Court_of_Appeals/Opinion/2013/12CA1261-PD.pdf
http://www.cobar.org/opinions/opinion.cfm?opinionid=9033&courtid=1