Unfair Labor Practice (ULP) definition
Under US labor law, unfair labor practices (ULP) are those that violate relevant employment legislation – particularly the National Labor Relations Act (NLRA). Claims would be investigated by the National Labor Relations Board (NLRB), who are concerned with transgressions on both sides - unions and employers.
It’s important to note that not all ‘unfair’ acts in the workplace amount to unfair labor practices. ULPs are very specific transgressions and an up-to-date list can be requested from the NLRB.
Employers, for example, must not refuse to bargain with a union that’s authorised to speak on behalf of its employees, dominate or interfere with the formation or administration of a labour organisation or discriminate an employee from engaging in union action.
Unions must not cause an employer to discriminate against an employee, strike or picket a health-care establishment without giving the necessary notice, require excessive dues or restrain/coerce employees in the choice of their union representative or the use of their rights.