If the cause of earache is an ear infection, there may be a watery or pus-like fluid coming out of the ear. Outer ear infections (infections of the tube connecting the outer ear and eardrum) and middle ear infections (infections of the parts of the ear behind the eardrum) are very common causes of earache.
Umbrella company contractors only have to keep personal tax records, as they are employees, not business owners. If you are an employer, you need to keep all PAYE records for 3 years (in addition to the current year). A CIS contractor must keep his CIS records for the same period of time.
Unless another OSHA rule specifically provides a different period of time, you must keep exposure records for at least 30 years, except for Background data related to environmental or workplace monitoring or measuring, such as laboratory reports and worksheets, must only be retained for 1 year, so long as the employer preserves certain interpretive documents relevant to the interpretation of the data for 30 years.