Trading in the U.S. index futures suggests that Wall Street stocks may open Monday’s session notably lower, stung by worries concerning the domestic labor market. The non-farm payrolls report released last Friday showed job additions at an anemic pace of 126,000, although there were positives in the report, including average hourly earnings growth and an unchanged jobless rate. Meanwhile, activity in the rest of global markets is light, given the Easter Monday holiday in some of the Asian markets and Europe. The mood in the domestic markets may also hinge on a couple of service sector readings due later in the day.