If electrical work needs to be 24 / 7 then that means it must be quite urgent, not so. Fortunately, not all of the time. There is always electrical work that could just wait. But the 24 hour emergency electrical sandwich ma situation room definitely does need to be on standby. For just in case, and you never can tell when an incident will arise. And fortunately again, not all of the time, but then again, just to be sure.
Anything connected if you will to the electrical servicing industries is generally regarded as an essential service. And in most cases, and essential service will be catering out if you will for emergencies, 24 / 7, just to be exact. And just to be sure. These hours also cover the public holidays and weekends. Electrical emergencies should always be treated as a matter of high priority in any event.
The neglect of a fused wire within an electric circuit box stationed against the wall could have calamitous consequences. No degree of complacency can be allowed to settle in. It must always be case of affirmative action if you will. Affirmative as in doing things now and not leaving it overnight until the next day. Because by that time it could almost certainly be too late. Not only will a building have been burnt to the ground, lives could have been lost.
Thankfully, most people will not be thinking twice about giving a buzz to their 24 / 7 emergency electrician. And here you can readily admit that it is more a case of not wishing to be inconvenienced. Seriously though, businesses and their operations cannot afford to experience too much downtime. And apart from the expense, there is also the risk management issue.