Starbucks Union Claims CEO Schultz Violated Labor Law by ‘Threatening to Withhold' Benefits

• The union representing Starbucks baristas is taking aim at the coffee giant's interim chief executive, Howard Schultz.
• The union alleges in a letter obtained by CNBC that Schultz's recent comments about an improved benefits plan amounted to illegal threats and had a "chilling effect" on impending union votes.
• Starbucks defended the comments, saying it would need to respect the bargaining process to extend new benefits to unionized workers.

The union representing Starbucks baristas is taking aim at the coffee giant's interim chief executive, Howard Schultz, alleging his recent comments about an improved benefits plan amounted to illegal threats and had a "chilling effect" on impending union votes.

The union, Starbucks Workers United, claims in an April 22 filing with the National Labor Relations Board that Starbucks, via Schultz's comments, violated the National Labor Relations Act and asks the agency to issue a complaint in the union's favor.

Schultz last month told U.S. store leaders that the company was reviewing the coffee chain's benefits program, but that the new benefits legally couldn't be extended to stores that have voted to unionize without separately negotiated contracts for unionized workers. One of Schultz's first moves as returning CEO was to suspend the company's share buyback program to invest in benefits for workers.

In a letter from Starbucks Workers United's counsel to the NLRB, obtained by CNBC, the union claims that Schultz's comments "threatening to withhold" the benefits had an "immediate and profound chilling effect on organizing campaigns nationwide."

It offers workers to testify that Starbucks baristas read about the comments in media reports shortly before voting and some pulled support "last minute" as a result, costing a union win at one location in Virginia.

The letter also claims the comments have been "parroted" by store managers and district managers, which has interfered with efforts to organize, or had a coercive effect.

Starbucks defended the comments made by Schultz, saying it would need to respect the bargaining process to extend new benefits to unionized workers.

"This is not a matter of Howard's choice or opinion; this is the law. Any new benefit cannot be unilaterally given to stores that voted to unionize during collective bargaining. Howard remains focused on moving quickly to build the future of Starbucks with partners together, side-by-side," Starbucks spokesman Reggie Borges said in a statement to CNBC.

Starbucks Workers United has filed more than 80 claims against the company for allegedly violating federal labor law, most recently notching a win with the NLRB petitioning for injunctive relief and immediate reinstatement of three Starbucks workers who were dismissed after seeking to organize.

Starbucks also last month filed its first charges against the union, claiming it intimidated partners and broke federal labor law.

Starbucks Workers United statement to CNBC that Schultz's comments around the benefits review are "just another desperate attempt to prevent Starbucks partners from exercising our right to have a union and the right to collective bargaining."

"This is an extension of other threats that Howard Schultz and their management team have been making. Hopefully at some point Howard recognizes you cannot have a 'progressive company' and be the poster child for union busting," the union said.

So far more than 200 cafes nationwide have petitioned the NLRB to vote on unionizing with Starbucks Workers United, and over 40 have voted in favor of organizing.

Starbucks has maintained its position that its relationship with partners is best served without a union.