Unfair labour practices by unions can include all the following except Select one: a. attempting, at the workplace during working hours, to persuade an employee to join or not join a union b. intimidating or penalizing an individual because s/he has filed a complaint or testified at a labour hearing c. failing to represent employees fairly d. seeking to compel an employer to bargain collectively with the union when the union is the certified bargaining agent engaging in, encouraging, or threatening an illegal strike