Sec. 11. WORK RECORDS; DAILY TIME SHEET. The county engineer shall keep or cause to be kept, in duplicate, a daily time sheet which shall show the amount of time and the character of work performed and the place where the same is performed by himself and each person working for the county engineer, and such other records in connection therewith as the commissioners court and county auditor may require, one copy of which shall be furnished to the county auditor, and one copy shall be retained by the engineer.