According to Variety, which confirmed the news with his representatives, Riehle died of natural causes on October 15 in Los Angeles.

His management team, Wright Entertainment, said in a statement carried by ABC11 that his career in theater, film, and television spanned nearly five decades and more than 400 projects. He is survived by his wife, Jane Latham, and their four children.

The character is a product manager laid off from Initech who survives a hit-and-run accident and lands a massive financial settlement that lets him build his prototype 'Jump to Conclusions' mat.

Rolling Stone recounts his immortal 'I have people skills!' defense and, citing an AV Club interview, Riehle's joke that director Mike Judge told him the original mat had simply 'disappeared.'

The outpouring reflects how deeply Riehle threaded through pop culture. Variety notes he appeared across the 'Star Trek' franchise, playing Batai in 'The Next Generation's' beloved 'The Inner Light,' and portrayed Santa Claus in eight different projects.

NBC News highlights his range — from 'Glory' and 'The Fugitive' to Scorsese's 'Casino' and a kindly mechanic in 'Bridesmaids' — plus a final turn as Warden Reynolds on HBO's 'Barry' in 2023. Fans on X, quoted by metro.co.uk, called him the ultimate 'I know that guy' actor.

Tributes emphasize the man as much as the resume. His representatives said, per Variety and ABC11, that he will be remembered for his 'genuine goodness, boundless kindness, and unwavering generosity, particularly toward emerging actors and filmmakers.'

NBC News reports that 'Grounded for Life' co-star Donal Logue called him 'an actor's actor — humble, kind, and incredible at his craft,' recalling an audition where Riehle made him laugh so hard he fell to the floor.

Filmmaker Michael Matteo Rossi told metro.co.uk he was one of the nicest, most genuine people he had ever met.

Born May 12, 1948, in Menomonee Falls, Wisconsin, Riehle attended the University of Notre Dame and earned a master's from the University of Minnesota, per Variety.

He began acting at Meadow Brook Theatre in Rochester, Michigan, before regional theater in the Pacific Northwest led to an appearance in the John Wayne film 'Rooster Cogburn.'

Rolling Stone traces his screen career to the 1970s, with breakthroughs in 1989's 'Glory' and a Joe Pesci connection that helped land him a role in 'Casino.' NBC News quotes him telling Notre Dame Magazine that 'the lead isn't always the best part in a play or a movie.'

Even in death, Riehle's prolific work ethic shows. Rolling Stone reports that IMDb lists ten additional upcoming projects for the actor, while nine.com.au cites the database as showing six projects completed or in post-production at the time of his death.

nine.com.au also records his own 2020 remark that roughly half of fans recognized him from 'Office Space' while others confused him with a local teacher or deli worker.

His representatives, per ABC11, have asked that his family's privacy be respected as the industry absorbs the loss of one of its most reliable and beloved character players.