documents.

III.

22
We turn to the question of when Gerber Truck's obligations to the Funds on behalf of its employees ended.  The district court found Gerber Truck was obliged to make payments only until October 15, 1982, and held that it owed the Funds for delinquencies occurring prior to that date.  According to the district court, the 1979-1982 Agreement, whose terms called for it to expire sixty days after notice of termination, was terminated effectively on October 15, 1982-sixty days after Gerber gave Gonzales his oral notice of termination.  However, since both the 1979-1982 Agreement and the Participation Agreement expressly provided for year-to-year continuation unless terminated in writing, Gerber's August 1982 oral notice of termination was insufficient.  Gerber's May 11, 1984 letter to the Funds cancelinghis obligations also was insufficient because it failed to cancel both the 1979-1982 Agreement and the Participation Agreement.  Thus, Gerber Truck did not terminate its obligations until Gerber wrote letters to the Funds and to Local 50 on November 5, 1984.  Gerber's November 1984 notice was not effective, however, until March 31, 1985, because both the 1979-1982 Agreement and the Participation Agreement continued in force from year to year after March 31, 1982.  (They could terminate only on a March 31, provided Gerber gave sixty days written notice.)    Therefore, since Gerber gave written notice in November 1984, Gerber Truck's obligations to the Funds extended through March 1985.


23
If Gerber Truck's obligations are limited to the three Fat's drivers, however, they may in fact