It also depends on the operator's stabilised approach policy. For many years the airline where I flew had a policy that required the aircraft to be stabilised at the final approach speed by 1,000ft AAL, in all conditions. That's since changed to 500ft AAL if required for speed control compliance, but under the old policy, 160kts until 4nm was "problematic", because the aircraft would still be decelerating towards the final approach speed at 1,000ft AAL. If the stabilised approach criteria aren't met, it's a mandatory go-around for many (if not most) airlines.
Minimum approach speed doesn't really have any workload implications unless it's imposed at the last minute, resulting in a flurry of configuration changes to slow down.
Last edited by BuzzBox; 1st Jul 2022 at 12:26.