No, even if it works, it won't be obvious
Standing itself does not belong to sports or physical exercise, and it cannot achieve the effect of losing weight.
Sports that can make people slim down need at least aerobic exercise, such as jogging, cycling, skipping rope, dancing and so on.
The amount of exercise achieved by standing is too small to play a sufficient role.
If standing must play a role, it can only be said that not sitting and standing for about 30 minutes after meals can reduce the increase of abdominal fat. It will have a little effect.
You are too tired to stand like this now. Standing for a long time will put too much pressure on the legs, and varicose veins may appear. Many people who need to stand for a long time have such troubles. If this is not your job demand, but you do it on purpose, hoping to lose weight in this way, I advise you not to continue. This is a drop in the bucket and will not have a satisfactory effect.
If you want to lose weight, you should adjust your diet and increase your exercise.
Gradually reduce food intake, eat scientifically, eat well early, have a full lunch, eat less (or not) at night, don't eat too much at a time, eat more coarse grains, vegetables and fruits, drink more water and eat less pork.
Ensure moderate aerobic exercise every day.
This is a scientific and effective way to lose weight.
I hope it helps you.