I worked as a plumber/gas fitter in the maintenance department. A typical day would be waiting for the supervisor to print out work order to fix a leak, unplug a drain, or trouble shoot a piece of equipment. There was lots of down time when no equipment was down or other issues, but things can and did break very often.
Management is a disaster, supervisors did not communicate well with each other between shifts. Lots of times they did not even know who was on vacation, what work was needed to be done or what parts were ordered. There was little to no planning for jobs, lots of times no parts were ordered or the wrong parts were brought in so jobs were continuously being half assed with what was available.
If you apply for a day shift position they will not tell you that the position is actually filled through seniority. You will think you have been offered the Mon-Fri shift only to find out they are putting you on straight night shift, or weekend shift. BEWARE OF THIS!
The workplace culture is a game of hide and seek. Most employees are not great trades people and hardly know enough to pass their trades exam. Its everyone for themselves. The supervisors know who works hard and will load those employees up with work, while the lazy employees are left to hide and look at their phones. No incentive to work hard, or do a good job. Most work is done in a hurried half assed way.
The pay is great for what is required, the benefits are not so great and usually a complete hassle to get dental, medical, or prescriptions filled.