Are there long-run effects of the minimum wage
The should be neatly divided into three sections:
1) Summary, 2) Main Comments, and 3) Minor Comments.
In the summary, you should describe the main question the paper addresses, an overview of the methods, and the main conclusions.
In section 2, you should provide a constructive critique of the paper. How compelling is the research question? Are the methods (theories, empirical approach, etc.) appropriate? What are some of the shortcomings?
In section 3, you should provide any comments that would improve the paper (organization, clarity, etc.) but are not central to its overall message.