(NVR) - More than a month after the festival’s conclusion, BottleRock organizers have yet to pay 142 union workers $630,000 in wages as well as a number of other vendors who worked at the five-day music festival.

BottleRock co-founder Bob Vogt said he is actively courting investors in hopes of paying off his creditors, making promised charitable donations and planning BottleRock 2014.

According to International Alliance of Theatrical Stage Employees (IATSE) Local 16 president Jim Beaumonte, the San Francisco-based union has filed a grievance against BottleRock requesting payment of wages and benefits for its members. The workers should have been paid by May 24 through a company called Island Creative Management, said Beaumonte.

A call to Island Creative Management for comment on Tuesday was not returned.

“We’re taking steps to rectify this,” Beaumonte said in a brief interview Wednesday. “We have a grievance process” that will be followed, he said.

Vogt said the festival has been unable to pay those wages and other expenses because it hasn’t received the revenue owed from the festival’s food and beverage concessions managed by Cindy Pawlcyn’s restaurant group CP Cooks LLC. Vogt said CP Cooks had not provided him a timely account of the finances from the event.