is there a law against this kind of work in the middle of the night?
To the extent that there is, there are exemptions for emergency works. Just consider a night without sleep as the price you pay for having electricity at your beck and call for the 364 days of the year.
To the extent that there is, there are exemptions for emergency works. Just consider a night without sleep as the price you pay for having electricity at your beck and call for the 364 days of the year.