Opinion by

It was the duty of the defendant to erect a suitable scaffold on which the plaintiff could properly and safely perform the work he was sent to do, and the first question to be considered in the case is whether this duty was discharged. The plaintiff submitted evidence tending to show that it was not, and that the neglect to discharge it was the cause of his fall. A part of this evidence was descriptive of the manner in which scaffolds were usually constructed for the performance of such work as the plaintiff was required to do and was to the effect that scaffolds so constructed were safe. It was also to the effect that a scaffold constructed as the plaintiff and his witnesses testified the one in question was, was unsafe. This branch of the plaintiff’s contention was answered by the defendant with evidence showing that the scaffold was constructed precisely as the plaintiff’s experts testified it should have been in order to make it secure and a proper place for the performance of the work. It will thus be seen that the parties agreed as to what should have been done by the defendant, and disagreed as to what was done by him. If, therefore, the plaintiff’s evidence on this point was believed it established the charge of negligence, and if the defendant’s evidence was credited there should have been a verdict in his favor. It was not possible to reconcile the con*400flicting testimony. Assuming that the plaintiff’s evidence was believed by the’ jury, and that the defendant’s evidence was not, the next question for us to consider is whether the plaintiff was chargeable with contributory negligence. It seems to be conceded that his fall was attributable to the defective condition of the scaffold. He says that this condition was the result of the defendant’s negligence in the construction of the scaffold, and the defendant says it was caused by a change or alteration of the scaffold by Krimmel. Did the plaintiff go upon the scaffold on Monday with knowledge of its condition ? It is contended by the defendant that if he did so he was chargeable with negligence fatal to his suit. In connection with tins contention we must consider the evidence affecting it. The plaintiff had been employed four summers in such work as he was engaged in at the time of his fall. He noticed on Saturday, and again on Monday, that there was no upright inside the window, and he knew that in this respect, at least, the construction of the scaffold differed from the construction of the scaffolds on which he had formerly worked. He also knew that the object of such an upright was to strengthen the scaffold and hold down the heel of it to prevent it from tilting. His fellow workman and witness, Krimmel, testified that there was nothing inside the window to support the ledger boards, and no upright underneath them to the ground; that on Saturday while be and the plaintiff were upon the scaffold “ it appeared loose ” and “ rocked up and down,” and that on leaving it, at noon, he complained to the defendant of the condition of it. Broadbent, the plaintiff’s witness, testifed, that the scaffold wobbled on Saturday when the plaintiff and Krimmel were upon it.

The plaintiff also testified that he heard Krimmel complain to the defendant on Saturday that the scaffold was not “ in the way it should be; that there was something loose; it might cause an accident,” and the defendant replied that he was very sorry. This was all he heard the defendant say in regard to the complaint made by Krimmel, and the latter never claimed to him, until after his fall, that the defendant promised to repair the scaffold, or said that it should be attended to. It is plain therefore that the plaintiff was not induced to go upon the scaffold Monday morning by anything said to him or in his presence by the defendant or by Krimmel, his fellow workman. *401He testified distinctly that he noticed before going upon it on Monday tbat there had been no change in its condition since he left it Saturday noon. He must therefore, upon his own showing, be regarded as having voluntarily resumed work upon it on Monday with knowledge that it was improperly constructed and unsafe. There was an obvious risk in working upon the scaffold, as the plaintiff described it. “ When an employee after having the opportunity of becoming acquainted with the risks of his situation, accepts them, he cannot complain if subsequently injured by such exposure. By contracting for the performance of hazardous duties, he assumes such risks as are incident to their discharge from causes open and obvious, the dangerous character of which causes he has had opportunity to ascertain: ” Brossman v. Railroad Co., 113 Pa. 490; Bemisch v. Roberts, 143 Pa. 1. If it be conceded that the scaffold, by reason of the negligence of the defendant in constructing it, was insecure and dangerous, the negligence of the plaintiff in going upon it with the knowledge and under the circumstances disclosed by the case as presented by him must, on well settled principles, defeat this action. We therefore sustain the third specification of error.

Judgment reversed.