The tribunal also fined Agnelli €60,000.
The wages case regards Juve’s announcement at the start of the pandemic that players had to agree to take big pay cuts for four months, to enable the club to make ends meet during the health emergency.
Juve, however, allegedly made secret payments to players, who only gave up one month’s salary.
The club and other former directors implicated in the case reached a plea bargain with sporting prosecutors to pay a €718,000 fine in May.
The Turin giants were docked 10 Serie A points last season in a separate case about financial irregularities regarding allegedly inflated values assigned to some transfer dealings in the club’s balance sheets in recent years.
Agnelli was banned from football for two years over that case.
The new ruling takes the overall suspension total up to 40 months.
ANSA