The steroids and epidural injections are to get you over some of the discomfort while your back is recovering from the injury. During this time, and perhaps indefinitely, you should avoid overexerting yourself and clearly you should not lift heavy objects at work. It will only aggravate the situation. What you need to do is discuss the problem with your employer and have your physician write a letter to your employer stating your situation. Often another less strenuous position is acceptable to the employer.
Most employers are willing to work with employees if things are done in a reasonable manner.
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