Answer:
Respecting the spirit as well as the letter of housekeeping rules
Explanation:
Organizational citizenship behavior will cover every commitment that a member of the group has outside his/her contractual obligation.
For example, let's say that you're hired as a sales person in a company. Your contractual obligation would most likely limited to fulfilling your sales target.
But, as an employees, you are also expected to obey the company's housekeeping rule, such as ensuring that your workplace stays clean and you won't break any of the equipment in the office.
Commitment to follow such housekeeping rules is an example of a organizational citizenship behavior.