Is overtime taxable as a gift, taxable benefit, or barter transaction?
It seems to me that people working overtime are gifting businesses quite a lot of free benefits. Shouldn't this fall under gift tax, a taxable benefit, or barter transaction (businesses flat out stating it is their justification for future promotion/salary increases)?
Any meaningful answer to this question is going to require the specific jurisdiction.
There probably is a jurisdiction, somewhere, where this is a plausible theory.
But, with the disclaimer that IANAL in any jurisdiction, I'll recommend against proposing such ideas in your workplace.
Just to be clear, you are talking about unpaid overtime, right?
By that argument, any wasted time should be deductible as an expense.
Accounting for time gets difficult.
Capitalism and the IRD mostly measure money because otherwise there's too much leeway for fraud.