Starbucks CEO Brian Niccol said the coffee chain is committed to bargaining in good faith with the union that represents many of its baristas, as the two sides work to craft a labor deal."I deeply respect the right of partners to choose, through a fair and democratic process, to be represented by a union," Niccol wrote on Tuesday in a letter to the union obtained by CNBC. "If our partners choose to be represented, I am committed to making sure we engage constructively and in good faith with the union and th ...