Does one require two separate tax returns if one worked two jobs?

You do not need to file a separate tax return for both jobs.  When you enter all details in your first T4 slip into our software, right at the bottom of that T4 slip, you will see "Add T4 for (your name)". Click on that and another T4 slip will be generated for the second job you worked. 

Upon completion, both T4 slips will be summed up. 

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