Staff health journal (ZOZh): a detailed examination form. An expanded hygiene log that records each symptom as well as the admission decision, useful when investigating food poisoning.
The health log is a detailed examination form. It records every symptom, not just work clearance, which is useful when investigating food poisoning. The electronic version records the examination time, removal from work and corrective actions.

Required fields: Full name, position and date; Symptoms: cough, runny nose, diarrhoea, wounds; Body temperature; Decision made. An empty field is equivalent to an incomplete log for an inspector, so use a dash deliberately and include an explanation.
Every shift: make the entry on the day of the event. Do not backdate entries: uniform dates and identical values are precisely how inspectors identify record keeping done only as a formality.
SanPiN 2.3/2.4.4282-26. Include the regulatory reference on the title page so the inspector can immediately see why the log is kept.
Yes. SanPiN 2.3/2.4.4282-26 does not require paper: the important points are being able to see who made an entry and when, and preventing unnoticed retrospective changes. For an inspection, print the electronic log for the required period.
Inspectors usually request records for the last 12 months, so one year is a practical minimum. Keep logs connected with a food poisoning investigation or a complaint until the proceedings are closed.