My employer failed to provide me the Forms T4 and Relevé 1. I was not able to do my taxes by the deadline, will I get penalized if I wait until next year?

You should contact your employer, he should provide you with a T4 and RL1 by February 28th of the year following the taxation year.  If he refuses to comply you should contact CRA and Revenu Québec and let them know.  You can get interest and penalties to any amount own if you don't produce your return by the filing deadline of the following year.