How to Manage Pushcart Staff

[Eindra]

Hi

I just started my pushcart shop and have one full time assistance. Intending to have one part timer in future. She is pretty good in selling and product knowledge. The only problem is punctuality. She is always late. The peak period for my pushcart is during lunch time and after office hour. We open at 11 am. Eversince she started, she is always late. Now she only come to open at 12 noon plus so miss out some of lunch time customers as it needs about 20 min to open the shop. I have already told her so many times to come on time. She said she will. But she is still late.

Since she is good at selling and quick learner. I do not want to dismiss her.

Can anyone suggest how to manage this kind of staff?

Thanks