The National Labor Relations Board's Philadelphia office has agreed to hear complaints filed by Au Bon Pain employees at the Philadelphia International Airport.

In their unfair labor practice charges filed last year, the employees complained that in September the company tried to dissuade them from attempting to form a union by disciplining two of the activists, by currying favor by offering to pay for an employee's child care and by bringing in the Boston-based company's chief executive to meet workers.

The hearing is set for April 13, NLRB regional officer Dennis Walsh wrote on Jan. 26. An Au Bon Pain spokesperson was not available for comment.