If my employer pays me £80 per day, and I can estimate the CO2 footprint of doing my job, compared not working, is around 15Kg CO2e. So my earnings have a footprint equivalent to 180g CO2e per £. (This might be from my daily commute, chunky work computer, office AC and whatever it is that my company actually does)
I wish to buy a new phone and can easily choose the one with the lowest CO2 footprint in its class without looking at the price.
But should I look at the price of the phone and consider my CO2 emissions in earning the money to pay for it. A new iPhone X is worth ten days of my labour or 150Kg of CO2e, which is double the manufacturing footprint. Whilst an iPhone 6 is only two day's labour 30Kg CO2e, a third the phone's manufacturing footprint.
Sure, I could go without a new phone and work two or ten days less than necessary. But if I must consume consumer goods, should my labour count?