Kathy from San Francisco writes: “I started working part-time for a small tech start-up in San Francisco in February this year. Last Wednesday, my five-year-old son came down with the stomach flu so I e-mailed my supervisor that evening that that I would not be working my shifts Thursday, and possibly Friday to take care of my sick child. When I returned to work on Monday, my supervisor told me that I should not be taking “so much” time off. I was confused by his statement because I have not taken any sick days since starting this job and just assumed that I had some available. I checked my paystub to confirm how much paid sick leave I have accrued but it did not have that information. I have my six-month performance review coming up. Should I be worried that taking a couple of days off to take care of my sick child will affect it?