We had a similar case, we quoted a job to clean light fittings, one sparks would'nt do it , same reason , we let him go and me (as Supervisor) and the gaffer did them.Very true words from Mr Hornet. Our college tutor holds a technicians card etc, one day he was digging out a trench on site, another spark turns up, he asks if hes gonna give him a hand block turns round "Im an Approved Electrician i dont dig trenches thats a laborers job". Way i see it if a job needs doing it has to get done doesnt matter what your job title is.