Mining operations run 24/7/365 days a year and workers have shifts.
Being contacted out of hours (notice the absence of the word office) is a no-no unless there's an on call agreement .. and even that has a roster.
There's an unspoken exception for serious accidents that require hands on deck to save lives | recover bodies.
I don't regard sending an email as an issue, it's much like posting a letter - but there's no obligation to read or respond to a work email out of hours (in countries such as Australia).
Being contacted out of hours (notice the absence of the word office) is a no-no unless there's an on call agreement .. and even that has a roster.
There's an unspoken exception for serious accidents that require hands on deck to save lives | recover bodies.
I don't regard sending an email as an issue, it's much like posting a letter - but there's no obligation to read or respond to a work email out of hours (in countries such as Australia).