How quickly you can get back to work will depend on how quickly you recover from surgery and what type of work you are doing. For physically demanding work, you should ensure sufficient recovery and healing time. On the other hand, you can resume simple work fairly quickly after some days, provided that you are symptom-free. Talk to your doctor about your individual approach.
Are there jobs I can no longer carry out? (electromagnetic interferences at workplace, physical work, driving)
For most of the common jobs, resuming work will be possible even with a pacemaker or an ICD. Some high-risk jobs may be prohibited with a pacemaker and/or ICD, depending on the working environment, occupational safety aspects and the local legal requirements. Critical settings may include strong electromagnetic fields (e.g. high voltage plant), high-risk exposition (e.g. roofer) or high responsibility (e.g. pilot). It is important to discuss this with your doctor or your occupational physician.
Should I inform my employer and/or colleague about my device?
This will probably depend on your working contract and regional law. It may be beneficial to inform your supervisor and/or colleague(s) about your condition. This could help them to react correctly in case of emergencies (e.g. calling an ambulance, performing CPR, etc.). Discuss this point with your family and your doctor if you feel unsure.
Are there any precautions my employer needs to take?
The legal requirements for employers differ by country and by company size. Some countries require CPR training for employees in larger companies. In large companies, installing an automatic external defibrillator (AED) may be reasonable. However, this is not legally required in most countries.