I have an evening flight operated by SQ but I have to work during the day.

I have an evening flight operated by SQ but I have to work during the day. Flying from Sydney can I check in and do bag drop in the morning during the morning flight check in times so I don't need to bring my bags to work?

Are you on the 7:10pm flight? I don't think SQ offers early check-in, but there are all-day left luggage facilities where you can drop off your bags in the morning before work.

I would try check in during morning times (and if staff give you grief ask for the Supervisor) - and if that fails you can always resort to plan B and use the left luggage facilities at the airport

Yes I am on the 7.10pm flight and I can bring my luggage to my office, but just it will be a bit rush to cramp with other passengers on the same train rushing to get meet my flight whilst I could have checked in early (if provided) and I can just bring my handbag as normal to the airport and fly.