Free template
A work report template: the services of a period with date, person, hours and amount, and Excel works out the totals. With the client's signature.
A work report shows the client which services were provided in a period – as the basis for their approval and for the invoice. When work is billed by time, it is often attached to the invoice.
Enter every service with date, person, description and hours. In the Excel file every row calculates hours times hourly rate, and the total row the hours and amount of the period. The Word file and the PDF have the same columns, plus fields for remarks and both sides' signatures.
A list of the services a provider delivered for a client in a period, usually with hours. The client confirms it, then the work is invoiced.
A timesheet records one person's working time. A work report is meant for the client and shows which services were provided for them, also by several people.
Your contract decides. Many clients confirm the report before the invoice; the template has signature fields for that. It is not legal advice.
In the Excel file, yes: hours times hourly rate in every row, plus the totals. In Word and the PDF you write the amounts in by hand.
Kontor Suite turns approved hours into the statement for the client, sends them a link for approval and creates an invoice draft in Lexware Office from it. The trial is free and needs no payment details.