Mid level managers (above the foreman and scheduler) spend very little time in the field. They know very little about about actual time requirements or staffing needs on the job. You will often go into the field without an address for the location, correct specs, plans, scope of the work required, equipment, etc. Knowing this it's possible to correct for it (most jobs are scheduled the day before - leaving time to get the right information).
Time cards - field techs are hourly. Doing the job correctly usually means scrounging info from other techs, spec books, online, etc. This time is free to the company. Lunch is mandatory (and taken off the card) although you will rarely get it.
Temps - many of the techs are temps. These guys are the first to get laid off in the slow season (with no unemployement ins). Temps get no benefits, no days off, no bonuses and are treated rather poorly by mid level. Advice - get off temp status well before fall.
Hazing - this is common for new guys. Management considers it a feature to weed out people who cannot do the work. There are only a few goldbrick techs (most are excellent) but these guys really pile the work on the new guys. Stay away from Z if you're new.
Computers - company is rolling out a new computer system. This will likely help us out in the long run. In the short run having two systems is causing all sorts of problems as both have to be looked at to know what's going on with jobs. The guys without the new machines have no way to see what the guys with machines have done.
Paperwork - it's endless and can easily take up a quarter of your day if you have a lot of jobs on that day. MLM are very against automation. The new computers may help in the mid or long term. Currently this is just something that needs to be sucked up.
Culture - the entrepreneurial culture of the old ground is long gone. There is a rather heavy and somewhat ominous culture of fear in the ranks in regards to MLM. Even the construction supervisor and foremen seem to act in this way. Friends of MLM get better jobs. Non friends of MLM get tough jobs or cuts in hours (worse). It's easy to have multiple bosses and conflicting instructions. To hear someone say thank you - good job happens as rarely as sighting hen's teeth. A thick skin is required as there is a lot of talking down. Some MLM seem to think that this is motivational.