What to check before requesting anything
Before requesting an employment letter or bank statement, confirm with the consulate or the official visa platform: the competent consulate or authority for your jurisdiction, the exact visa category, the number of months the financial evidence must cover, the account-holder details it must include, the accepted currency, who must sign the document, whether translation is required, and whether an original bank-issued or bank-certified document is required rather than a simple downloaded PDF.
Employment letters
An acceptable employment letter typically states the applicant's name exactly as it appears on the passport, job title, length of employment, type of relationship (employee, contractor), compensation, and, where relevant, whether the work is performed remotely. If the receiving authority requires an apostille on a private letter of this kind, which is not, by itself, a public document, the usual path is for a notary to certify the employer's signature, followed by an apostille on that notarization from the state where the notary acted. A plain, unnotarized employment letter typically cannot be apostilled on its own.