This study investigates the sabotage of investments in response to hurdle contracts as a means of formal control in capital budgeting. We conduct a laboratory experiment to examine factors that drive or inhibit sabotage. Sabotage occurs when the manager provides false information to prevent the firm from realizing a profitable investment, which is costly both for the manager and the firm. Our results show that managers sabotage investments to reciprocate for distrustful formal control. Conversely, budget communication that requires factual assertions and thus activates managers' preference for honesty inhibits sabotage. Moreover, honesty suppresses negative reciprocity and thus reduces sabotage not only directly but also indirectly. Our findings warn firms to consider the sabotage of investments as a hidden cost of control in budgeting. They show that honesty has a spill-over effect, as it absorbs negative reciprocity.