If you're a bank clerk who applied for other jobs while on medical leave and have been selected for an interview, you'll need a No Objection Certificate (NOC) from your current employer. The best course of action is to formally request the NOC from your bank. If they deny your request, you can ask for the legal basis of their refusal and consider further steps. It's advisable to inform your bank about your job applications and wait for their response before seeking external advice.