Four referendums were held in Switzerland during 1949.[1] The first two were held on 22 May on revising article 39 of the federal constitution concerning the Swiss National Bank and a federal law amending a 1928 law on measures against tuberculosis, with both rejected by voters.[1] The third was held on 11 September on a popular initiative "for the recurrence to direct democracy" and was narrowly approved.[1] The final one was held on 11 December on a federal law to amend the employment status of federal civil servants, and was also approved.[1] 
  Background
 The referendum on revising the constitution was a mandatory referendum.[1] Together with the popular initiative, both required a double majority; a majority of the popular vote and majority of the cantons.[2] The decision of each canton was based on the vote in that canton.[2] Full cantons counted as one vote, whilst half cantons counted as half.[2] The referendums on federal laws on tuberculosis and civil servants were both optional referendums,[1] which required only a simple majority of votes in favour.[1] 
 Results
 May: Constitutional amendment on the Swiss National Bank
   | Choice  |  Popular vote  |  Cantons  | 
  | Votes  |  %  |  Full  |  Half  |  Total  | 
  | For |  293,650 |  38.5 |  1 |  1 |  1.5  | 
  | Against |  468,823 |  61.5 |  18 |  5 |  20.5  | 
  | Blank votes |  81,909 |  – |  – |  – |  –  | 
  | Invalid votes |  1,485 |  – |  – |  – |  –  | 
  | Total |  845,867 |  100 |  19 |  6 |  22  | 
  | Registered voters/turnout |  1,385,582 |  61.0 |  – |  – |  –  | 
  | Source: Nohlen & Stöver  | 
 May: Federal law on tuberculosis
   | Choice  |  Votes  |  %  | 
  | For |  202,863 |  24.8  | 
  | Against |  613,552 |  75.2  | 
  | Blank votes |  28,241 |  –  | 
  | Invalid votes |  1,211 |  –  | 
  | Total |  845,867 |  100  | 
  | Registered voters/turnout |  1,385,582 |  61.0  | 
  | Source: Nohlen & Stöver  | 
    | Choice  |  Popular vote  |  Cantons  | 
  | Votes  |  %  |  Full  |  Half  |  Total  | 
  | For |  280,755 |  50.7 |  11 |  3 |  12.5  | 
  | Against |  272,599 |  49.3 |  8 |  3 |  9.5  | 
  | Blank votes |  35,655 |  – |  – |  – |  –  | 
  | Invalid votes |  1,941 |  – |  – |  – |  –  | 
  | Total |  590,950 |  100 |  19 |  6 |  22  | 
  | Registered voters/turnout |  1,389,856 |  42.5 |  – |  – |  –  | 
  | Source: Nohlen & Stöver  | 
 December: Federal law on civil servants
   | Choice  |  Votes  |  %  | 
  | For |  546,160 |  55.3  | 
  | Against |  441,785 |  44.7  | 
  | Blank votes |  14,552 |  –  | 
  | Invalid votes |  1,865 |  –  | 
  | Total |  1,004,362 |  100  | 
  | Registered voters/turnout |  1,394,818 |  72.0  | 
  | Source: Nohlen & Stöver  | 
 References
   - ^ a b c d e f g Nohlen, D & Stöver, P (2010) Elections in Europe: A data handbook, p1913 ISBN 9783832956097 
  - ^ a b c Nohlen & Stöver, p1891