Frozen shoulder can be diagnosed if limits to the active range of motion (range of motion from active use of muscles) are the same or almost the same as the limits to the passive range of motion (range of motion from a person manipulating the arm and shoulder).
Only the social security tax has a wage base limit. The wage base limit is the maximum wage that's subject to the tax for that year. For earnings in 2017, this base is $127,200. Refer to What's New in Publication 15 for the current wage limit for social security wages; or Publication 51 for agricultural employers.
National Insurance earnings threshold. National Insurance is calculated on gross earnings (before tax or pension deductions) above the earnings threshold. For 2015-16 the National Insurance threshold is Â£155 a week or Â£8,060 a year. 1  If you earn above the threshold you pay 12% of your earnings between Â£8,060 and Â£42,385. Anything you earn above Â£42,385 a year, you pay National Insurance at 2%. 2  If your earnings are below the earnings threshold you pay no National Insurance contributions. 3  You still build up rights to benefits, provided you earn Â£5,824 a year or more up to the lower earnings limit.