It should be honest and trustworthy and kind to people.
Need better training for new hire
When you hire someone for part time, dont try to bully them into full time work.
Try to understand that everyone has other things to do in life than just working. Please give your employees or workers a well balanced schedule. Don't be puting them in morning,noon,night in same week for it is very hard and unhealthy to adjust with those kind of mix swing shifts.
Learn to appreciate employees and reward them for their hard work
To give out more shifts
Long working hours