New York Codes, Rules and Regulations
Title 21 - Miscellaneous
Chapter I - Waterfront Commission Of New York Harbor
Part 4 - Longshoremen, Checkers, And Telecommunications System Controllers
Section 4.3 - Checkers required to be registered
Inclusion in the longshoremen's register as a checker is required for any longshoreman, including, but not limited to, a timekeeper, checker or clerk, who is employed to engage in direct and immediate checking of waterborne freight or of the custodial accounting therefor or in the recording or tabulation of the hours worked at piers or other waterfront terminals by natural persons employed by carriers of freight by water or stevedores.