|Year 1966|(0.034)<br>-0.018|(0.034)<br>-0.007|(0.030)<br>-0.008|(0.032)<br>0.019|(0.023)<br>-0.002|(0.122)<br>-0.052|
|---|---|---|---|---|---|---|
||(0.025)|(0.026)|(0.029)|(0.021)|(0.019)|(0.115)|
|Year 1967|-0.044|-0.038|-0.054<sup>*</sup>|-0.004|-0.004|-0.098|
||(0.035)|(0.033)|(0.029)|(0.043)|(0.020)|(0.111)|
|Year 1969 (Year of<br>change)|-0.057|-0.061|-0.074<sup>***</sup>|-0.061|-0.019|-0.199<sup>*</sup>|
||(0.036)|(0.039)|(0.025)|(0.038)|(0.022)|(0.112)|
|Year 1970|-0.060<sup>*</sup>|-0.062<sup>*</sup>|-0.053<sup>*</sup>|-0.039|-0.021|-0.221<sup>**</sup>|
||(0.029)|(0.032)|(0.026)|(0.029)|(0.016)|(0.083)|
|Year 1971|-0.043|-0.043|-0.065<sup>***</sup>|-0.032|0.002|-0.157|
||(0.028)|(0.029)|(0.022)|(0.027)|(0.017)|(0.110)|
|Year 1972|-0.065<sup>**</sup>|-0.065<sup>*</sup>|-0.042<sup>**</sup>|-0.048|-0.017|-0.259<sup>***</sup>|
||(0.028)|(0.031)|(0.019)|(0.033)|(0.014)|(0.079)|
|Year 1973|-0.092<sup>***</sup>|-0.095<sup>***</sup>|-0.052<sup>*</sup>|-0.072<sup>**</sup>|-0.028<sup>*</sup>|-0.254<sup>**</sup>|
||(0.029)|(0.030)|(0.028)|(0.033)|(0.015)|(0.099)|
|Year 1974|-0.032|-0.037|-0.042|-0.016|0.005|-0.100|
||(0.036)|(0.039)|(0.025)|(0.038)|(0.019)|(0.119)|
|Year 1975|-0.039|-0.056<sup>*</sup>|-0.039|-0.023|-0.011|-0.160|
||(0.031)|(0.030)|(0.033)|(0.029)|(0.015)|(0.107)|
|Year 1976|-0.063<sup>*</sup>|-0.053|-0.043|-0.027|-0.006|-0.200<sup>**</sup>|
||(0.036)|(0.037)|(0.028)|(0.032)|(0.017)|(0.093)|
|Year 1977|-0.066<sup>*</sup>|-0.071<sup>*</sup>|-0.049<sup>**</sup>|-0.039|-0.021|-0.355<sup>***</sup>|
||(0.032)|(0.039)|(0.019)|(0.027)|(0.019)|(0.086)|
|Year 1978|-0.069<sup>*</sup>|-0.062|-0.048<sup>*</sup>|-0.044|0.003|-0.339<sup>***</sup>|
||(0.036)|(0.038)|(0.025)|(0.035)|(0.019)|(0.104)|
|Year 1979|<br>-0.093<sup>***</sup>|<br>-0.092<sup>***</sup>|<br>-0.051<sup>**</sup>|<br>-0.067<sup>**</sup>|<br>-0.048<sup>**</sup>|<br>-0.439<sup>***</sup>|
||(0.028)|(0.030)|(0.024)|(0.026)|(0.019)|(0.093)|
|Year 1980|<br>-0.092<sup>***</sup>|<br>-0.097<sup>***</sup>|<br>-0.074<sup>***</sup>|<br>-0.063<sup>*</sup>|<br>-0.030|<br>-0.389<sup>***</sup>|
||(0.029)|(0.031)|(0.024)|(0.031)|(0.023)|(0.085)|
|Year 1981|<br>-0.128<sup>***</sup>|<br>-0.130<sup>***</sup>|<br>-0.059<sup>**</sup>|<br>-0.081<sup>**</sup>|<br>-0.041<sup>**</sup>|<br>-0.510<sup>***</sup>|
||(0.029)|(0.032)|(0.022)|(0.032)|(0.018)|(0.102)|
|_N_|10538|10538|10538|10538|10538|10238|
|adj._R_<sup>2</sup>|0.139|0.151|0.124|0.139|0.037|0.074|

Notes: All regressions add birth governorate fixed-effects, household size and gender. Standard errors are clustered at the birth governorate level. *** p<0.01, ** p<0.05, * p<0.1.

To measure the working conditions of workers, we use a dummy variable for a worker without a hazardous job,<sup>2</sup> a dummy variable for a worker with air conditioning at the workplace and a dummy variable for health impact. A dummy variable for health impact is defined when the health of workers was adversely affected by one of the following factors: soil and gases, chemicals and radiation, heat, humidity, noise, lighting, insects, and fatigue. The results of Table 2 indicate that most of the cohorts of 1971-1980 work in hazardous conditions. The cohorts of 1969-1981 work without air conditioning. And working conditions had adverse impacts on the health of most of the cohorts of 1970-1981.

> 2 The question is asked of interviewees in the questionnaires as follows: What is your evaluation of the degree of danger at work? And the responses include: very dangerous, dangerous, relatively, not dangerous. If an interviewee answers “not dangerous”, the dummy variable for a worker without hazardous jobs would be equal to 1, 0 otherwise.

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