Utilize a capsule wardrobe concept
In capsule wardrobes each clothing item can be worn with everything else. Don’t pack separate outfits for each day; plan to re-wear slacks with a different shirt or blouse, for example.
Use packing cubes
Packing cubes will compress a large amount of clothing into a very small amount of space, allowing use of a smaller suitcase.
Only bring three pairs of shoes
Shoes take up more space than any other item. Bring three pairs total, including the pair worn on travel days.
For the average business trip there is no need to bring full-sized toiletries. Use small bottles or spare contact lens cases to store liquids.
Using these tips will help inexperienced business travellers pack like a pro and avoid checking their suitcase, saving money, time, and inconvenience.