Warren Adler, the longtime No. 2 exec at the Directors Guild of America, will retire April 1.

Adler has served as the DGA’s associate national exec director since 1998, and has worked at the DGA for 32 years.

The DGA, which made the announcement Monday, didn’t disclose who Adler’s successor will be.

“After more than three decades as an executive at this Guild, there’s virtually no department, no function and no initiative that Warren hasn’t personally been involved in and made better through his dedication and his expertise,” said national exec director Jay D. Roth. “He’s been instrumental in our growth and strength as an organization.”

Roth’s been in the top spot at the DGA since 1995. Other key top DGA execs are Western exec director Bryan Unger, Eastern exec director Russell Hollander, counsel David Korduner and Kathy Garmezy, associate exec director for government and international affairs.

Adler began his DGA career in 1978 as associate general counsel, where he focused on contract enforcement. Adler’s been the primary DGA exec overseeing creative rights issues since the mid-1980s.

He became the second highest ranking exec in 1998 when he was named to his current slot, a newly-created position designed to provide expanded membership services.

“When I came to the DGA, the Guild had roughly a dozen people on staff,” Adler noted. “It’s been wonderful to have been part of the Guild’s transition to a modern, efficient, fully-functioning labor organization.”

During his tenure, Adler’s participated 11 negotiations cycles and served as a trustee of the DGA Pension & Health Plans.

He’ll continue to work for the DGA as a senior counselor, primarily on creative rights and diversity issues.