"Maintenance supervisors utilize their certifications from the SMRP, IMI, and NAA to ensure that they are qualified to coordinate maintenance of building systems. During an interview, expect to talk about how you keep your workers on task, how you fire others, and your knowledge on maintenance. You may have to role-play many situations where a worker is unproductive or conflicting with others."
How would you handle a problem employee who will not/can not pull their weight?
Talk to them to find out if its a question of they cannot do the job. Maybe they need more training? Otherwise perhaps they need to be transferred to another position