They may be required to bend or squat for long periods, in order to work on hard-to-reach wiring. There is always the threat of electrical shocks, but as long as proper safety procedures are followed, the number of accidents will remain low.
Electricians typically work 8-hour days, 5 days a week. This may vary for independent electrical contractors, depending on the work available. Some contractors work 12 to 14-hour days. Maintenance electricians may have to work evenings and weekends