Legal Definition of wage. 1  1 : a payment usually of money for labor or services usually according to a contract and on an hourly, daily, or piecework basis âoften used in plural. 2  2 pl : the share of the national product attributable to labor as a factor in production.
Causes. Sinus headaches can be caused by sinus congestion and inflammation, called sinusitis. Sinusitis, in turn, is caused by either a respiratory infection, such as a cold or flu, or allergies, like hay fever.Healthy sinuses allow mucus to drain and air to circulate throughout the nasal passages.auses. Sinus headaches can be caused by sinus congestion and inflammation, called sinusitis. Sinusitis, in turn, is caused by either a respiratory infection, such as a cold or flu, or allergies, like hay fever.
Anything that causes sudden nasal congestion can aggravate already pre-existing obstructions and arousals. One theory about why people get sinusitis is that the sinus and nasal passageways are too small. This can happen due to upper and lower jaw underdevelopment, which is the basis for obstructive sleep apnea.